AM300 EVO - Audio Amplifier Atoll - Free user manual and instructions

Product type	Audio power amplifier
Brand	Atoll
Model	AM300 EVO
Power output (8 Ω)	150 Wrms per channel
Power output (4 Ω)	280 Wrms per channel
Power output (bridged mono, 8 Ω)	500 W
Power supply	2 x 440 VA
Total capacitance	83,600 µF
Inputs	1 RCA stereo + 1 XLR stereo
Input impedance	220 kΩ
Sensitivity	1.7 V
Signal-to-noise ratio	105 dB
Distortion at 1 kHz	0.005%
Frequency response	5 Hz – 200 kHz
Trigger input	12 V trigger via 3.5 mm stereo jack
Dimensions	440 x 351 x 103 mm
Weight	16 kg
Power consumption	0 W off / 26 W – 700 W on
Safety features	Delayed switch-on relay, thermal protection
Cleaning	Soft dry cloth; no solvents or abrasives
Environmental requirements	Dry, well-ventilated place away from heat
Included accessories	Power lead, owner's manual with warranty certificate
Warranty	2 years from date of purchase
Manufacturer	Atoll Electronique, France

Frequently Asked Questions - AM300 EVO Atoll

What is the power output of the Atoll AM300 EVO?

The AM300 EVO delivers 150 Wrms per channel into 8 Ω, 280 Wrms per channel into 4 Ω, and 500 W in bridged mono mode into 8 Ω.

How do I set the amplifier to Mono Bridge mode?

Unplug the amplifier, set the rear input switch (5) to MONO, connect the preamp's PRE-OUT to the Right inputs of each amplifier, then connect the right speaker terminal (red) to the speaker's positive terminal and the left speaker terminal (red) to the speaker's negative terminal.

What is the 12V trigger input used for?

The Trigger input allows the amplifier to be turned ON or put to SLEEP simultaneously with another device equipped with a 12V trigger outlet. Use a male-to-male 3.5 mm stereo jack cable, and keep the front ON/SLEEP button in SLEEP (0) position.

How should I clean the AM300 EVO?

Switch off the amplifier before cleaning. Use a soft, dry rag. Never use acetone, white-spirit, ammonia, or abrasive products, and never attempt to clean inside the device.

What are the input options on this amplifier?

The amplifier offers one RCA stereo input and one XLR stereo input. A rear selector switch lets you choose between Line (RCA) and XLR modes.

Why is there a delay when switching on the amplifier?

The temporized switch-on activates a relay that protects the loudspeakers from over-voltage on the power output stage, ensuring a safe start-up.

What should I do if the front LED flashes and the sound is muted?

This indicates the thermal protection has been activated due to overheating. The sound remains muted until the amplifier cools down; check ventilation and reduce heat sources if necessary.

How long should I warm up the amplifier before listening?

Switch it on at least half an hour before listening so the power stage reaches its ideal working temperature. Between uses, leave it on to stay at optimum temperature, but switch it off at night or when leaving home.

What is the weight and size of the AM300 EVO?

The amplifier weighs 16 kg and has dimensions of 440 x 351 x 103 mm.

What is included in the box with the AM300 EVO?

The package includes the AM300 EVO power amplifier, a power lead, and the owner's manual with the certificate of guarantee.

USER MANUAL AM300 EVO Atoll

CONNECTINGS + TRIGGER

1) Right speaker outputs.
2) Left speaker outputs.
3) General power plug and ON/OFF button (with protective fuse).
4) Input type selector:

- Line: button up.

- XLR: button down.

5) Switch for MONO bridge.

6) Right line input.
7) Left line input.
8) Right line output.
9) Left line output.
10) Right XLR input.
11) Left XLR input.
12) Trigger input ⁽¹⁾ .

(1) This input allows the control ON/SLEEP of your amplifier simultaneously to any device with a 12V Trigger outlet. For the system to operate, the ON/SLEEP button on your AM300 must remain in the SLEEP position (0). If the switch is in the ON position (1), the amplifier will work but not the Trigger function.

Trigger cable must be a Male to Male stereo jack plug ∅ 3,5 mm (1/8").

DETAILS OF FUNCTIONS

13) Led indicator of ON/SLEEP switch.
14) Led indicator of mono bridge: the led is ON when the Power Amp. has been activated on MONO before general switch on.
15) Led indicator of XLR Input mode: the LED switches on if the button (8) on the rear of the AM is on XLR position.

BRIDGE MONO MODE

Warning: be sure that your amplifier is unplugged and that no other appliance is plug-in during this operation.

You can transform your power amplifier into a mono bridge amplifier. Activate the input (5) at the rear of the appliance on MONO. PRE-OUT outputs of the preamp must be connected to the Right inputs of each Amplifier.

For each Amplifier, terminal ⊕ (red) of the Right output (1) has to be connected to the terminal ⊕ (red) of the speaker and terminal ⊕ (red) of the Left output (2) to the terminal ⊖ (black) of the speaker.

The wiring of the speakers will be the same while using RCA or XLR cables.

CONNECTIONS

(Configuration: 1 Preamp and 2 Power Amplifiers mono bridged).

E.C. MARKING

E.C. marking certified the conformity with low tension directive 73/23/CEE, directive CEM 89/336/CEE, and national transpositions.

WARRANTY CONDITIONS

The guarantee is two years long from the date of purchase. We recommend you to ask your dealer to fill the guarantee and to conserve it. The guarantee is only available for appliances that have been used correctly.

CLEANING

Before any cleaning, switch off your amplifier. Use a soft and dry rag to clean up the appliance. Never use acetone, white-spirit, ammoniac, or any kind of product containing an abrasive agent. Never try to clean up inside the appliance.

TECHNICAL DATA

Power Wrms/ch./8Ω (230v): 150 W

Power Wrms/ch./4Ω (230v): 280 W

Power in bridged mono/8Ω mode: 500 W

Power supply: 2×440 VA

Total of capacitors: 83 600 µ F

Number of stereo inputs: 1 RCA + 1 XLR

Switch OFF consumption: 0 W

ON consumption: 26 W - 700 W

Input impedance: 220 kΩ

Sensitivity: 1,7 V

Signal/Noise ratio: 105 dB

Distortion at 1 kHz: 0,005 %

Bandwidth : 5 Hz - 200 kHz

Rising time: 1,5 µ s

Dimensions: 440 × 351 × 103 mm

Weight : 16 Kg

CAUTIONS

• Do not make any connections when your device is powered on.
• Put your device in a dry and well-ventilated place, far from a source of heat.
• Avoid putting something on your amplifier.
• Avoid any short-cut.
• Strictly respect polarity & , as well as the left and right connections.
• Do not plug-in two speakers in parallel on the same output.

ADVISES

• To optimize the performance of your device, you should switch it on at least half an hour before any listening, the time for the power stage to reach its ideal working temperature.
• Your device will give you optimal listening quality after this time-lapse.
• Between two uses, it is, therefore, preferable to let the device on so that it remains at its optimum temperature.
• At night or when you leave your home, it is best to use the main switch to turn off the device.
• To optimize the sound quality of your system, we recommend that you choose good-quality connection cords. Do not hesitate to ask your specialist dealer for advice.
• Your amplifier is equipped with a temporized switch on. A relay protects loudspeakers on the output power stage from over-voltage.
• Your amplifier has thermal protection. In case of overheating, this protection is activated: the front LED flashes and the sound is muted until the device cools down.

You have just bought an amplifier with exceptional audiophile performance.

We really thank you for your confidence in our products. To get the best part of your amplifier, please read carefully this manual.

YOU WILL FIND ENCLOSED

– A power amplifier AM300 EVO.
- One power lead.
- This manual with the certificate of guarantee.

Latest update: 22nd April 2025

ATOLL ELECTRONIQUE®

is a French Company that designs, manufactures, and commercializes all its products.

WARRANTY FORM \~ MODEL AM300 EVO

To present to your dealer with the invoice when returning back the appliance:

ATOLL ELECTRONIQUE®

Bd des Merisiers

50370 BRECEY

FRANCE

Date of purchase:

Place of purchase:

Buyer signature:

Dealer Stamp

OWNER'S MANUAL

AM300 Evolution

POWER AMPLIFIER

ELECTRONIQUE

www.atoll-electronique.com