ME25 - Guitar BOSS - Free user manual and instructions

USER MANUAL ME25 BOSS

IMPORTANT NOTES ................................................................ 14 Main Specifications.................................................................14 Main Features A large number of realistic preamp modeling algorithms using COSM The unit is equipped with a diverse array ofCOSM amplifiers (ten types), ranging fromclean sound to high-gain sound. Thanks to the Sound Library, you can get just the right sound when you need it You can obtain the ideal sound simply byselecting a category and a variation. Super Stack featureYou can get the powerful sound of a largestacked tube amp with just the simple press ofa button. Phrase Loop featureYou can record and loop the playback ofphrases up to 38 seconds long. Can be linked with a PC using USBYou can use digital audio workstations (DAW)to accomplish digital recording and importnew sounds.2 Making the Connections and Turning the Power On Step Step Step Step Step Step Step Step Step Step Step Step

Inserting a plug into the PHONES jack automatically activates the built-in guitar amp simulator, enabling you to enjoy a natural guitar sound when using head-phones.When you’re connecting the ME-25’s OUTPUT to a normal guitar amp, disconnect the plug from the PHONES jack. Electric guitar Digital audio player, etc.Stereo headphones PSA-series AC adaptor (sold separately) Connect a commercially available anti-theft security cable here.http://www.kensington.com/Digital recorder, etc.PCS-31L cable, etc. (sold separately)Be sure to use a BOSS PSA-series adaptor. The use of any other adaptor may cause damage or malfunction.You can mix stereo audio from AUX IN with the output.The battery compartment is located on the underside.About connecting the ME-25 to the other devices When turning the unit upside-down, get a bunch of newspapers or magazines, and place them under the four corners or at both ends to prevent damage to the buttons and controls. Also, you should try to orient the unit so no buttons or controls get damaged. When turning the unit upside-down, handle with care to avoid dropping it, or allowing it to fall or tip over. Carefully follow the installation instructions for batteries, and make sure you observe the correct polarity. Avoid using new batteries together with used ones. In addition, avoid mixing dierent types of batteries. Remove the batteries whenever the unit is to remain unused for an extended period of time. If a battery has leaked, use a soft piece of cloth or paper towel to wipe all remnants of the discharge from the battery compartment. Then install new batteries. To avoid inammation of the skin, make sure that none of the battery discharge gets onto your hands or skin. Exercise the utmost caution so that none of the discharge gets near your eyes. Immediately rinse the aected area with running water if any of the discharge has entered the eyes. Never keep batteries together with metallic objects such as ballpoint pens, necklaces, hairpins, etc. Expected battery life under continuous use: Carbon: 3 hours, Alkaline: 9 hours These gures will vary depending on the actual conditions of use. When operating on battery power only, the unit's indicator will become dim when battery power gets too low. Replace the battery as soon as possible. We recommend that you keep batteries installed in the unit even when you're powering it with the AC adaptor. That way, you’ll be able to continue a performance even if the cord of the AC adaptor gets accidently disconnected from the unit. When connecting, turn down the volume all the way on all equipment!Connect the equipment to the OUTPUT jack.Insert the plug into the INPUT jack to power up the ME-25.Switch on the amp’s power last! If used improperly, batteries may explode or leak and cause damage or injury. In the interest of safety, please read and observe the following precautions. The INPUT jack doubles as the power switch. Power to the unit is turned on when you plug into the INPUT jack; the power is turned o when the cable is unplugged.Insert the included batteries, taking care to orient them correctly. Once the connections have been completed, turn on power to your various devices in the order specied. By turning on devices in the wrong order, you risk causing malfunction and/or damage to speakers and other devices. To prevent malfunction and/or damage to speakers or other devices, always turn down the volume, and turn o the power on all devices before making any connections. Raise the amp volume only after turning on the power to all connected devices. This unit is equipped with a protection circuit. A brief interval (a few seconds) after power up is required before the unit will operate normally. When connection cables with resistors are used, the volume level of equipment connected to INPUT and AUX IN may be low. If this happens, use connection cables that do not contain resistors.

The ME-25 has no built-in amp or speakers. To hear sounds, you’ll need to provide a guitar amplier, stereo headphones, or other such equipment.

For mono output, connect a cable to the L/MONO jack only.

If you want to send the output from the PHONES jack to a recorder or other device, use a connection cable such as the PCS-31L (available separately). The PCS-31L has a stereo phone plug on one end, and two phone plugs on the other end. If, instead, you were to use an ordinary guitar cable, only the sound of the L channel would be available in the output.

On the ME-25, the level of the signal input via AUX cannot be adjusted. You’ll need to perform that adjustment on the equipment you’ve connected. When needing to monitor the sound being input, rst turn down the volume all the way on the device you’ve connected. Then, gradually raise the level until you’ve reached the appropriate volume.3 Español Português NederlandsItalianoFrançaisDeutschEnglish Let’s Play! Once you’ve finished making the connections, try playing sounds as you operate the ME-25. Switches to the next memory.Switches to the previous memory. DRIVE Knob TONE Knob This adjusts the tone quality of the preamp. VOLUME Knob This adjusts the volume level of the preamp.This adjusts the amount of distortion of preamp distortion.“Phrase Loop Play” (p. 10) This switches to sounds suited to solo performance. Pressing this pedal switches SOLO on and makes the pedal’s indicator light up. Pressing this pedal for two seconds or longer enables the Phrase Loop feature. You can save the settings you've adjusted.“Saving Sounds (Memory Write)” (p. 4) The currently selected sound (memory) and other information appears here. You can use pedal eects to apply wah or a variety of other pedal eects. To assign the pedal’s function, rmly press the toe of the pedal to toggle the PEDAL FX indicator’s status. This lets you get the powerful sound of a large, stack-type tube amp even when you're playing with a small-size amp. Pressing this button switches on Super Stack and makes the SUPER STACK indicator light up. Turn the VOLUME knob while SOLO is on to set the desired solo volume.* Cannot be adjusted while in Edit mode (p. 5).Depressing and holding the pedal lets you switch memories successively.Depressing the two pedals at the same time activates the tuner function.For detailed information about pedal eects, read “PEDAL FX (Pedal Eects)” (p. 8).The pedal controls the volume.The pedal controls the pedal eects.Unlit: Lit: Display The knobs will be disabled when the preamp is o. To check the on/o status of the preamp, go to the Edit mode (p. 5). PEDAL FX Indicator

What is a Memory? A group of eect settings is called a “memory.” The ME-25 has 60 memories. Using Super Stack Using Pedal Eects Choosing a Sound (Memory) Switching to Solo Sounds Adjusting the Volume and Tone Quality Phrase Loop Play Should you encounter unexpected results, such as no sound being produced, check the following. Are connections to other devices correctly made?Check the connections once more. Is the volume turned down?Check the volume levels on any connected amp or mixer. Has the level been lowered with the expression pedal? When the expression pedal is set to control volume, sounds are not output when the toe of the pedal is in the raised position.4 Using the Sound Library

1. Choose the category you want.

“SL” will appear in the display.

2. Choose the variation you want.

This completes the procedure for selecting sounds from theSound Library. Sounds cannot be added and saved in the Sound Library using the ME-25 itself. Sounds that you like and want to reuse should be saved in memory (Memory Write). When saving the sounds in memory, placing them in the order that you intend to use during the performance will be helpful. What’s the Sound Library? The Sound Library contains sounds in a variety of styles. You can obtain ideal sounds with ease, simply by selecting a sound provided in the Sound Library. Six categories are available (CLEAN, CRUNCH, DRIVE, HEAVY, LEAD, and EXTREME), with ten different variations provided for each. For information on Sound Library sounds, read the separate “Sound Library List.”

Saving Sounds (Memory Write) This saves the current effect, noise suppressor, and control settingsin a memory. Until you perform a Memory Write operation, switching off the poweror changing memories will cause any tones you’ve created to be lost. Carrying out a Memory Write operation causes the sound already saved at the destination memory to be lost.

The memory number shown in the display will start blinking.

Use the MEMORY pedals to choose the memory number where you’d like to save the memory. Pressing and holding a pedal lets you switch memories successively.To cancel the Memory Write procedure, press [EXIT].

3. Press [WRITE] again.

The memory number will blink more rapidly, indicating thatthe sound has been saved. To copy a memory, call up the memory you want to copy, then simply carry out a Memory Write operation. You can copy the memory by choosing a different memory number and saving it there.

1. Hold down [EXIT] and press [WRITE].

“Ed” appears in the display and operation switches to Editmode.

2. Choose the effect whose settings you want to

make. The indicator for the selected effect flashes.To select PEDAL FX, firmly press down on the toe of the expression pedal until the PEDAL FX indicator is lit.For more information about each effect, read “Effect Guide” (p. 6).

3. Choose the type of effect.

The number of types varies depending on the effect. For instance, setting the COMP/FX type to 4 selects 3 (AC SIM) as the type.

4. Adjust the effect as desired.

This ends Edit mode.

6. If you want to save the settings you’ve just

made, carry out the Memory Write procedure (p. 4). Turning off the power or switching memories before you carry out a Memory Write operation causes the sound you've created to be lost.

Eect o Eect onThe indicators show the states described below.Each button press switches the state.Example: COMP/FXEect adjustmentLitO Flash In the Edit mode, the function shown in italics is enabled. Example: the CLEAN buttonThis functions as a COMP/FX button. This suppresses the noise and hum picked up by the guitar’spickups.

1. Hold down [EXIT] and press [WRITE].

“Ed” appears in the display and operation switches to Editmode.

Holding down [EXIT] and use the MEMORY or pedals to adjust the the noise suppressor. The current noise suppressor setting (t0–t9) appears in thedisplay. A setting of t0 (zero) turns off the noise suppressor. Adjusting the noise suppressor setting higher than necessary may result in no sound when the guitar is played at low volume.

3. Press [EXIT (EDIT)].

This ends Edit mode.

4. If you want to save the setting, carry out a

Memory Write operation (p. 4). Turning off the power or switching memories before you carry out a Memory Write operation causes the sound you’ve created to be lost. Adjusting the Noise Suppressor

Making Detailed Settings for Effects (Edit Mode) This produces an effect that sustains the sound without distortion. These effects add distinctive distortion or sustain. This models preamp response. Effect Guide COMP/FX (Compressor/Effects) Explanation 1: COMP This produces an effect that sustains the sound without distortion. SUSTAIN: This sets the sustain for the sound. ATTACK: This sets the attack (onset) of the effect sound. LEVEL: This sets the volume level of the effect. 2: T.WAH This produces a wah effect matched to the intensity of your picking. SENS: This sets the sensitivity of response to the input sound. TONE: This sets the tone (brightness) of the wah. PEAK: This sets the intensity of the wah sound. 3: AC SIM This transforms the sound of your elec- tric guitar into an acoustic guitar sound. LOW: This adjusts the tone of the low frequency range. HIGH: This adjusts the tone of the high frequency range. LEVEL: This sets the volume level of the effect. OD/DS (Overdrive/Distortion) Explanation 1: BOOST This is a gain booster. It works well for creating distortion with a COSM preamp, or for creating punchy clean tones when used alone. DRIVE: This sets the intensity of the distortion. TONE: This sets the brightness of the sound. LEVEL: This sets the volume level for OD/DS. 2: OD-1 This is the sound of the BOSS OD-1. It produces sweet, mild distortion. 3: T-SCREAM This models an Ibanez TS-808. 4: BLUES This is a unique overdrive that faithfully reproduces the nuances of picking. 5: DIST This is a sharp distortion with rich sustain. 6: CLASSIC This is the sound of a vintage stack-type amp. 7: MODERN This is the sound of a large high-gain amp. 8: METAL This is a distortion that emphasizes the midrange. 9: CORE This is a distortion that cuts the midrange. 10: FUZZ This is a distortion that is distinctively rough and heavy. PREAMP Explanation 1: CLEAN This is a clean sound that is smooth and warm. DRIVE: This sets the amount of distortion of the pre- amp. TONE: This sets adjusts the tone quality of the pre- amp. VOLUME: This sets adjusts the volume level of the pre- amp. 2: TWIN This models a Fender Twin Reverb. 3: TWEED This is a crunch sound of a Fender Bassman. 4: VO DRIVE This is a crunch sound reminiscent of a VOX combo amp. 5: BG LEAD This is a lead sound of a Mesa/Boogie combo amp. 6: MS VINTAGE This is a sound reminiscent of 1970s Marshall amps. 7: MS MODERN This models the higher-gain sound of Marshall amps of recent vintage. 8: 5150 DRIVE This is a lead channel of a Peavey EVH5150. 9: R-FIER This models a Mesa/Boogie Dual Rectifier. 10: ULTRA METAL This is an original metal amp of exclusive design that pro- duces sound having distinct contours along with bold bass and heavy distortion. This is ideal for all kinds of metal play, including complex and intense riffs, heavy and thundering downtuned bass riffs, speedy solos, and more. All product names mentioned in this document are trademarks or registered trademarks of their respective owners. Those companies are not affiliated with BOSS and have not licensed or authorized BOSS’s ME-25. Their marks are used solely to identify the equipment whose sound is simulated by BOSS’s ME-25. You can set the following parameters while the [DRIVE (PREAMP)] indicator is flashing rapidly. By holding the [DRIVE (PREAMP)] until “Ed” on the display starts blinking, you can make the indicator on the [DRIVE (PREAMP)] flash rapidly. When you press the [DRIVE (PREAMP)] again, the ME-25 returns to its normal state. BASS: This sets the tone quality of the lowfre- quency range. MIDDLE: This sets the tone quality of the middle- frequency range. TREBLE: This sets the tone quality of the highfre- quency range.7 Making Detailed Settings for Effects (Edit Mode) Español Português NederlandsItalianoFrançaisDeutschEnglish These effects broaden, modulate, and/or pitch shift the sound. This delays the sound to produce an echo-like effect. It lets you add thickness and create complex sounds. MODULATION Explanation 1: CHORUS This effect adds subtle wavering to transform the tone into one that is broader, thicker, and more beautiful. RATE: This sets the speed of the effect DEPTH: This sets the richness of the effect E.LEVEL: This sets the volume level of the effect. 2: PHASER This effect creates a sweeping, phase-shifted sound. RATE: This sets the speed of the effect DEPTH: This sets the richness of the effect RESONANCE: This sets the intensity of the effect. 3: FLANGER This creates a modulation effect like the rising and falling sound of a jet engine. RATE: This sets the speed of the effect DEPTH: This sets the richness of the effect RESONANCE: This sets the intensity of the effect. 4: ROTARY This effect produces the sound of rotating speakers. RATE: This sets the speed of the effect DEPTH: This sets the richness of the effect E.LEVEL: This sets the volume level of the effect. 5: UNI-V This models the Uni-Vibe, an effect that’s part of the rock sound of the 1960s. RATE: This sets the speed of the effect DEPTH: This sets the richness of the effect E.LEVEL: This sets the volume level of the effect. 6: TREMOLO This produces a retro effect through cyclical changes in the volume level. RATE: This sets the speed of the effect DEPTH: This sets the richness of the effect E.LEVEL: This sets the volume level of the effect. 7: HARMONIST This creates harmonies reminiscent of twin guitars.

• Play only single notes when using the harmonist effect KEY: This sets the musical key of the song being played. HARMONY: This sets the pitch of the harmony. E.LEVEL: This sets the volume level of the effect. 8: OCTAVE This imparts thickness by adding sound an octave lower.

• Play only single notes when using the octave effect. - D.LEVEL: This sets the volume level of the direct sound. E.LEVEL: This sets the volume level of the effect DELAY Explanation 1: 1–99 ms This is a delay of 1 to 99 ms (milli- seconds), which is ideal for a doubling effect. TIME: This sets the delay time in steps of 1 ms. FEEDBACK: This sets the number of times the delay sound repeats. E.LEVEL: This sets the volume level of the delay sound. 2: 100–990 ms This delay has a delay time of 100 to 990 ms (milliseconds). TIME: This sets the delay time in steps of 10 ms. FEEDBACK: This sets the number of times the delay sound repeats. E.LEVEL: This sets the volume level of the delay sound. 3: 1000–6000 ms This is a delay of 1,000 to 6,000 ms (milliseconds), which is suited to special effects. TIME: This sets the delay time in steps of 100 ms. FEEDBACK: This sets the number of times the delay sound repeats. E.LEVEL: This sets the volume level of the delay sound. 4: TAP This allows you to use the SOLO pedal to set the delay time (see below). TIME: This sets the beat for the delay sound. FEEDBACK: This sets the number of times the delay sound repeats. E.LEVEL: This sets the volume level of the delay sound. Ex. Detune +1 Octave-1 Octave Ex. 2ms 99ms Ex. 120ms 990ms Ex. 1200ms 6000ms Ex. Applying Effects in Time with the Song Tempo (Tap Tempo) When TAP is selected, you can set the delay’s tempo as dotted eighth notes or quarter notes by pressing the SOLO pedal two or more times in time with the tempo of the song. The SOLO pedal’s indicator flashes in time with the current tempo. When TAP is selected as the delay type, the SOLO feature cannot be switched on or off. TimingDelay SoundTIME setting8 Making Detailed Settings for Effects (Edit Mode) This adds lingering reverberations to the sound. This produces a variety of effects using the ME-25’s expression pedals. For information on how to use pedal effects, read “Using Pedal Effects” (p. 3). REVERB Explanation 1: ROOM This simulates the reverberations inside a room. - - LEVEL: This sets the volume level of the effect. 2: HALL This simulates the reverberations inside a hall. PEDAL FX (Pedal Effects) Explanation 1: WAH This is a wah effect.

2: +1 OCTAVE This lets you continuously vary the pitch up to one octave higher or lower than the original sound.

• Play only single notes when using the octave effect. 3: -1 OCTAVE 4: FREEZE This lets you sustain sound by operating a pedal. You can use this to hold a chord sound while playing a melody line. Using FREEZE

1. Press the heel of the expression pedal.

2. Play the guitar, and while the sound is playing, press the toe of the expression pedal.

The sound is sustained for as long as you keep the pedal pressed.

• You can adjust the volume of the sustained sound by changing the pedal position.

3. Pressing the heel of the expression pedal stops the sustained sound.9

Español Português NederlandsItalianoFrançaisDeutschEnglish Convenient Functions

1. Press the MEMORY / pedals at the same

time. The tuner is switched on.

2. If necessary, adjust the reference pitch.

You can change the reference pitch by holding down [EXIT]and pressing the MEMORY / pedals. The reference pitch setting is saved automatically, so there is no need to make this setting each time you tune. The reference pitch was set to 40 (440 Hz) when the unit was shipped from the factory.

3. Play a single open note on the string to be

tuned. The name of the note closest to the current pitch of the stringplayed appears in the display.

4. Tune so that the desired pitch is displayed

and both tuning guide indicators light up.

5. Press the MEMORY / pedals at the same

time. The tuner is switched off. Tuning the Guitar (Tuner) Display Pitch35–45 435–445 [Hz] 1,2 (C) ( sign)(D) (E) (F) (G) (A) (B) Too low(rapid ashing) (rapid ashing)TunedTuning GuideToo high Bypass Feature (BYPASS) In Tuner mode, the sound output is the same as the inputsound, with no effects applied (bypass).You can use the expression pedal to control the volume.10 Convenient Functions You can record up to 38 seconds of a performance and play backthe recorded section over and over. You can also layer additionalperformances with the recording as it plays back (overdubbing).This lets you create realtime backing performances on the fly.

1. Hold down the SOLO pedal for two seconds or

longer (STANDBY). Phrase Loop goes into recording standby and the SOLOpedal’s indicator flashes at a fixed interval.

2. Press the SOLO pedal (REC).

Recording starts as soon as you press the SOLO pedal, and theSOLO pedal’s indicator flashes rapidly.

3. Press the SOLO pedal again (PLAY).

Recording ends. As soon as recording stops, repeatedplayback of what you’ve recorded starts, and the SOLO pedal’sindicator lights continuously.An oscillating sound may be audible when the recording time is extremely short.

4. To layer additional recordings (overdubbing),

repeat Steps 2 and 3 (OVERDUB). You can switch memories even during phrase loop play, which lets you record a variety of overdubbed sounds.

5. To stop loop playback, press the SOLO pedal

twice in quick succession (STANDBY). Loop playback/recording stops, and Phrase Loop returns torecording standby. Press the pedal twice within the span of one second. When playback ends, the recorded data is deleted.

SOLO PedalIndicatorPress & hold > 2sec Operations such as calling up memories or Sound Library soundsmay result in discrepancies between the stored parameters and theactual positions of the controls.You can get the actual parameter values to appear in the display soyou can check them. Hold down [EXIT] and turn the control for the value you want to check. The value of the knob appears on the display for several seconds.When you call up memories, an effect’s parameters may not reflectthe actual position of the control knobs. You can set how theparameters behave when the control knobs are moved in this state.

method of control operation.

The setting is stored in memory. Checking the Values of Controls Making the Settings for Control Operation Display Control operationn0 The value changes immediately as the knob is turned (factory setting).n1 The value changes once the knob is turned past the posi-tion corresponding to the currently set value.11 Convenient Functions Español Português NederlandsItalianoFrançaisDeutschEnglish Connecting the unit to a computer enables you to manage the sounds on the ME-25 or to use a digital audio workstation (DAW) to record, play back, and edit audio. By using the dedicated driver, you can record, play back, and edit audio with high-quality sound and stable timing, and control the ME-25 using MIDI. You can download the ME-25 driver from the Roland local website (http://www.roland.com/). You must install the driver before you make USB connections. The program and procedures for installing the driver may vary according to your operating environment; carefully read the Readme included in the downloaded file. You can use the ME-25 as an audio interface to the DAW via USB. Use your computer’s software to adjust the level of the signal input via USB (it cannot be adjusted on the ME-25 itself). To adjust the volume of a guitar, use the expression pedal or adjust other volume related parameters. To monitor the sound being input, first lower the volume all the way using your computer’s software. Then, gradually raise the level until you’ve obtained the amount of volume you want. When the ME-25 is connected to a computer, the built-in guitar amp simulator is switched on. The signal that is input via AUX IN is not output using USB. Computer Connection Via USB Installing the USB Driver Using Digital Audio Workstations (DAW) Sending and receiving audio signalsAdjust the volume using the software12 Appendices You can restore the settings in the ME-25 (memories, tunerreference pitch, and knob response method) to the values set whenthe unit was shipped from the factory.Performing a factory reset causes all settings saved in memory to be lost.

1. Hold down [EXIT] and press the MEMORY

pedal. “FA” appears in the display.

The Tuning Guide flashes.

3. Press [WRITE] again.

The display flashes and the factory reset is executed.Never turn off the power while factory reset is in progress.The ME-25’s expression pedal has been set for optimal operation atthe factory. However, extended use and certain operatingenvironments can result in the pedal going out of adjustment.If you encounter problems such as the expression pedal’s ON/OFFswitch not functioning or the volume pedal not fully cutting off thesound, you can use the following procedure to readjust the pedal.When operating the expression pedal, be careful not to get your fingers pinched between the movable part and the panel. In places with small children, an adult should provide supervision and guidance until the child is capable of following all the rules essential for the safe operation of the unit.

1. Hold down [EXIT] and press the SOLO Pedal.

The display shows “Pd” then “Up.”

2. Move the heel of the expression pedal all the

way down, then release the pedal and press [WRITE]. The display shows “dn.”

Move the toe of the expression pedal all the way down, then release the pedal and press [WRITE]. A value indicating the current stiffness (sensitivity) of theexpression pedal switch appears in the display.If the display flashes in Steps 2 or 3, press the pedal again, and then press [WRITE].

4. Use the MEMORY / pedals to adjust the

stiffness (sensitivity) of the expression pedal toe switch. The lower the value, the more easily the switch will respond,even when pressed lightly.This is set to “5” when shipped from the factory.

The setting is saved in memory. Restoring the Factory Settings (Factory Reset) Adjusting the Expression Pedal

• Essentially, effects are connected in the order illustrated above. However, this order may change automatically in order to optimize the connection order and accommodate particular settings. Signal Flow EFFECT INPUTOUTPUTPHONESCOMP/FXOD/DS PREAMPPEDAL FXVOLUME(PEDAL)MODULATIONNOISE SUPPRESSORDELAY REVERB USB

• Do not open (or modify in any way) the unit or its AC adaptor.

• Do not attempt to repair the unit, or replace parts within it (except when this manual provides specific instructions directing you to do so). Refer all servicing to your retailer, the nearest Roland Service Center, or an authorized Roland distributor, as listed on the “Information” page.

• Never install the unit in any of the following locations.

• Subject to temperature extremes (e.g., direct sunlight in an enclosed vehicle, near a heating duct, on top of heat- generating equipment); or are

• Damp (e.g., baths, washrooms, on wet floors); or are

• Exposed to steam or smoke; or are

• Subject to salt exposure; or are

• Exposed to rain; or are

• Dusty or sandy; or are

• Subject to high levels of vibration and shakiness.

• Make sure you always have the unit placed so it is level and sure to remain stable. Never place it on stands that could wobble, or on inclined surfaces.

• Use only the specified AC adaptor (PSA series), and make sure the line voltage at the installation matches the input voltage specified on the AC adaptor’s body. Other AC adaptors may use a different polarity, or be designed for a different voltage, so their use could result in damage, malfunction, or electric shock.

• Do not excessively twist or bend the power cord, nor place heavy objects on it. Doing so can damage the cord, producing severed elements and short circuits. Damaged cords are fire and shock hazards!

• This unit, either alone or in combination with an amplifier and headphones or speakers, may be capable of producing sound levels that could cause permanent hearing loss. Do not operate for a long period of time at a high volume level, or at a level that is uncomfortable. If you experience any hearing loss or ringing in the ears, you should immediately stop using the unit, and consult an audiologist.

• Do not allow any objects (e.g., flammable material, coins, pins); or liquids of any kind (water, soft drinks, etc.) to penetrate the unit.

• Immediately turn the power off, remove the AC adaptor from the outlet, and request servicing by your retailer, the nearest Roland Service Center, or an authorized Roland distributor, as listed on the “Information” page when:

• The AC adaptor or the power-supply cord has been damaged; or

• If smoke or unusual odor occurs

• Objects have fallen into, or liquid has been spilled onto the unit; or

• The unit has been exposed to rain (or otherwise has become wet); or

• The unit does not appear to operate normally or exhibits a marked change in performance.

• In households with small children, an adult should provide supervision until the child is capable of following all the rules essential for the safe operation of the unit.

• Protect the unit from strong impact. (Do not drop it!)

• Do not force the unit’s power-supply cord to share an outlet with an unrea- sonable number of other devices. Be especially careful when using extension cords—the total power used by all devices you have connected to the extension cord’s outlet must never exceed the power rating (watts/ amperes) for the extension cord. Excessive loads can cause the insulation on the cord to heat up and eventually melt through.

• Before using the unit in a foreign country, consult with your retailer, the nearest Roland Service Center, or an authorized Roland distributor, as listed on the “Information” page.

• Batteries must never be recharged, heated, taken apart, or thrown into fire or water.

• Never expose Battery to excessive heat such as sunshine, fire or the like.

• The unit and the AC adaptor should be located so their location or position does not interfere with their proper ventilation.

• Always grasp only the output plug or the body of the AC adaptor when plugging into, or unplugging from, this unit or an outlet.

• At regular intervals, you should unplug the AC adaptor and clean it by using a dry cloth to wipe all dust and other accumulations away from its prongs. Also, disconnect the power plug from the power outlet whenever the unit is to remain unused for an extended period of time. Any accumu- lation of dust between the power plug and the power outlet can result in poor insulation and lead to fire.

• Try to prevent cords and cables from becoming entangled. Also, all cords and cables should be placed so they are out of the reach of children.

• Never climb on top of, nor place heavy objects on the unit.

• Never handle the AC adaptor body, or its output plugs, with wet hands when plugging into, or unplugging from, an outlet or this unit.

• Before moving the unit, disconnect the AC adaptor and all cords coming from external devices.

• Before cleaning the unit, turn off the power and unplug the AC adaptor from the outlet (p. 2).

• Whenever you suspect the possibility of lightning in your area, disconnect the AC adaptor from the outlet.

• If used improperly, batteries may explode or leak and cause damage or injury. In the interest of safety, please read and observe the following precautions (p. 2).

• Carefully follow the installation instructions for batteries, and make sure you observe the correct polarity.

• Avoid using new batteries together with used ones. In addition, avoid mixing different types of batteries.

• Remove the batteries whenever the unit is to remain unused for an extended period of time.

• If a battery has leaked, use a soft piece of cloth or paper towel to wipe all remnants of the discharge from the battery compartment. Then install new batteries. To avoid inflammation of the skin, make sure that none of the battery discharge gets onto your hands or skin. Exercise the utmost caution so that none of the discharge gets near your eyes. Immediately rinse the affected area with running water if any of the discharge has entered the eyes.

• Never keep batteries together with metallic objects such as ballpoint pens, necklaces, hairpins, etc.

• Used batteries must be disposed of in compliance with whatever regulations for their safe disposal that may be observed in the region in which you live.

• Should you remove a USB connector cap, keep them in a safe place out of children’s reach, so there is no chance of them being swallowed accidentally.

Used for instructions intended to alert the user to the risk of injury or material damage should the unit be used improperly.

• Material damage refers to damage or other adverse eects caused with respect to the home and all its furnishings, as well to domestic animals or pets. Used for instructions intended to alert the user to the risk of death or severe injury should the unit be used improperly. The

symbol alerts the user to things that must be carried out. The specic thing that must be done is indicated by the design contained within the circle. In the case of the symbol at left, it means that the power-cord plug must be unplugged from the outlet. The symbol alerts the user to important instructions or warnings.The specic meaning of the symbol is determined by the design contained within the triangle. In the case of the symbol at left, it is used for general cautions, warnings, or alerts to danger. The symbol alerts the user to items that must never be carried out (are forbidden). The specic thing that must not be done is indicated by the design contained within the circle. In the case of the symbol at left, it means that the unit must never be disassembled.

USING THE UNIT SAFELY14

Power Supply: Use of Batteries

• Do not connect this unit to same electrical outlet that is being used by an electrical appliance that is controlled by an inverter (such as a refrigerator, washing machine, microwave oven, or air conditioner), or that contains a motor. Depending on the way in which the electrical appliance is used, power supply noise may cause this unit to malfunction or may produce audible noise. If it is not practical to use a separate electrical outlet, connect a power supply noise filter between this unit and the electrical outlet.

• The AC adaptor will begin to generate heat after long hours of consecutive use. This is normal, and is not a cause for concern. 303a

• If you’ll be using the ME-25 for an extended time, we recommend that you use an AC adaptor. If you prefer to use a battery, we recommend an alkaline battery. 304b

• Batteries should always be installed or replaced before connecting any other devices. This way, you can prevent malfunction and/or damage to speakers or other devices. 306b

• Batteries are supplied with the unit. The life of these batteries may be limited, however, since their primary purpose was to enable testing.

• Before connecting this unit to other devices, turn off the power to all units. This will help prevent malfunctions and/or damage to speakers or other devices. Placement

• Using the unit near power amplifiers (or other equipment containing large power transformers) may induce hum. To alleviate the problem, change the orientation of this unit; or move it farther away from the source of inter- ference. 352a

• This device may interfere with radio and television reception. Do not use this device in the vicinity of such receivers. 352b

• Noise may be produced if wireless communications devices, such as cell phones, are operated in the vicinity of this unit. Such noise could occur when receiving or initiating a call, or while conversing. Should you experience such problems, you should relocate such wireless devices so they are at a greater distance from this unit, or switch them off. 354a

• Do not expose the unit to direct sunlight, place it near devices that radiate heat, leave it inside an enclosed vehicle, or otherwise subject it to temperature extremes. Excessive heat can deform or discolor the unit. 355b

• When moved from one location to another where the temperature and/or humidity is very different, water droplets (condensation) may form inside the unit. Damage or malfunction may result if you attempt to use the unit in this condition. Therefore, before using the unit, you must allow it to stand for several hours, until the condensation has completely evapo- rated.

• Depending on the material and temper- ature of the surface on which you place the unit, its rubber feet may discolor or mar the surface. You can place a piece of felt or cloth under the rubber feet to prevent this from happening. If you do so, please make sure that the unit will not slip or move accidentally. Maintenance 401a

• For everyday cleaning wipe the unit with a soft, dry cloth or one that has been slightly dampened with water. To remove stubborn dirt, use a cloth impregnated with a mild, non-abrasive detergent. Afterwards, be sure to wipe the unit thoroughly with a soft, dry cloth.

• Never use benzine, thinners, alcohol or solvents of any kind, to avoid the possi- bility of discoloration and/or defor- mation. Repairs and Data

• Please be aware that all data contained in the unit’s memory may be lost when the unit is sent for repairs. Important data should always be backed up on a computer, or written down on paper (when possible). During repairs, due care is taken to avoid the loss of data. However, in certain cases (such as when circuitry related to memory itself is out of order), we regret that it may not be possible to restore the data, and Roland assumes no liability concerning such loss of data. Additional Precautions

• Please be aware that the contents of memory can be irretrievably lost as a result of a malfunction, or the improper operation of the unit. To protect yourself against the risk of loosing important data, we recommend that you periodically save a backup copy of important data you have stored in the unit’s memory on a computer.

• Unfortunately, it may be impossible to restore the contents of data that was stored in the unit’s memory or computer once it has been lost. BOSS/ Roland Corporation assumes no liability concerning such loss of data.

• Use a reasonable amount of care when using the unit’s buttons, sliders, or other controls; and when using its jacks and connectors. Rough handling can lead to malfunctions.

• When connecting / disconnecting all cables, grasp the connector itself— never pull on the cable. This way you will avoid causing shorts, or damage to the cable’s internal elements. 558a

• To avoid disturbing your neighbors, try to keep the unit’s volume at reasonable levels. You may prefer to use headphones, so you do not need to be concerned about those around you (especially when it is late at night). 559a

• When you need to transport the unit, package it in the box (including padding) that it came in, if possible. Otherwise, you will need to use equiv- alent packaging materials.

• Some connection cables contain resistors. Do not use cables that incor- porate resistors for connecting to this unit. The use of such cables can cause the sound level to be extremely low, or impossible to hear. For information on cable specifications, contact the manufacturer of the cable. Copyright/Licence/ Trademarks

• Do not use this unit for purposes that could infringe on a copyright held by a third party. We assume no responsibility whatsoever with regard to any infringe- ments of third-party copyrights arising through your use of this unit.

• MMP (Moore Microprocessor Portfolio) refers to a patent portfolio concerned with microprocessor architecture, which was developed by Technology Properties Limited (TPL). Roland has licensed this technology from the TPL Group.

• Roland, BOSS, and COSM are either registered trademarks or trademarks of Roland Corporation in the United States and/or other countries.

• All product names mentioned in this document are trademarks or registered trademarks of their respective owners. Printing Conventions and icons in This Manual IMPORTANT NOTES Text or numerals enclosed in square brackets [ ] Indicate buttons. [WRITE] WRITE button Indicates informa- tion that you should be aware of when using the ME-25. Indicates supple- mentary informa- tion about an operation. Indicates informa- tion about a conve- nient operation. (p. **) Indicates a reference page. ME-25: Guitar Multiple Effects

• In the interest of product improvement, the specifica- tions and/or appearance of this unit are subject to change without prior notice. Main Specifications

• AF method (Adaptive Focus method) This is a proprietary method from Roland & BOSS that vastly improves the signal-to-noise (S/N) ratio of the A/D and D/A converters.

3. Pulse [EXIT (EDIT)].