MIDI 4x Loop - Guitar amplifier G-LAB - Free user manual and instructions
Find the device manual for free MIDI 4x Loop G-LAB in PDF.
Pick your language and provide your email: we'll send you a specifically translated version.
| Product Type | MIDI Loop Switcher for Guitar Amplifiers |
| Number of Loops | 4 |
| Control Interface | MIDI In, Thru/Out |
| Power Supply | 9V DC (center negative, 2.1mm barrel) |
| Current Consumption | ~200 mA |
| Dimensions | 12.5 x 7.5 x 4.5 cm (approx.) |
| Weight | 350 g (approx.) |
| Housing Material | Aluminum alloy |
| Switching Technology | True bypass with relay switching |
| Number of Presets | 128 (via MIDI Program Change) |
| MIDI Channels | 1-16 selectable |
| Loop Configuration | Series or parallel (selectable per loop) |
| Audio Connectors | 1/4" TS jacks for send/return per loop |
| LED Indicators | Per loop active status and MIDI activity |
| Firmware Upgradeable | Yes, via MIDI SysEx |
| Included Accessories | Power supply, user manual |
| Cleaning Instructions | Wipe with a dry, soft cloth; avoid solvents |
| Safety Notice | Use only the specified power supply; do not expose to moisture |
| Repairability | Serviceable by qualified technicians; no user-serviceable parts |
Frequently Asked Questions - MIDI 4x Loop G-LAB
How do I connect the MIDI 4x Loop to my amplifier and pedals?
Connect your guitar to the INPUT of the first loop or directly to the unit's main input. For each loop, connect the SEND to your pedal's input, and the pedal's output to RETURN. Finally, connect the unit's OUTPUT to your amplifier's input. Use a MIDI controller to send program changes to select presets.
Can I control this switcher without MIDI?
No, the MIDI 4x Loop is designed to be controlled exclusively via MIDI. You need a MIDI controller or sequencer to send Program Change or Control Change messages. There are no front panel buttons for manual switching.
What MIDI commands does it respond to?
It responds to Program Change (PC) messages to recall presets, and Control Change (CC) messages for real-time loop toggling. The specific CC numbers are documented in the manual. It also supports SysEx for firmware updates and advanced configuration.
How many presets can I store?
You can store up to 128 presets, accessible via Program Change messages (0-127). Each preset remembers the on/off state of each loop and the loop configuration (series/parallel).
Can I change the order of loops without rewiring?
The physical order is fixed by the wiring. However, you can achieve different signal chains by using the parallel routing option or by rearranging which pedals are connected to which loop. Some MIDI switchers allow virtual reordering via internal routing, but this model does not support that; loops are connected in the order they are wired.
What power supply should I use?
Use a 9V DC power supply with a center-negative 2.1mm barrel connector. The current draw is approximately 200 mA. Do not use an AC adapter or incorrect polarity, as it may damage the unit.
Is it true bypass?
Yes, the unit uses true bypass relay switching. When a loop is off, the signal passes through a pure hardwire connection with no active electronics. This ensures no tone degradation when the loop is bypassed.
How do I update the firmware?
Firmware updates are performed via MIDI SysEx. You will need a MIDI interface and software that can send SysEx data (e.g., MIDI Ox on Windows or SysEx Librarian on Mac). Download the latest firmware from G-LAB's website and follow the included instructions carefully.
What are the dimensions and weight?
Approximate dimensions are 12.5 x 7.5 x 4.5 cm, and weight is about 350 g. It is compact enough to fit on a pedalboard.
How do I clean and maintain the device?
Disconnect the power before cleaning. Use a dry, soft cloth to wipe the exterior. Do not use any solvents or abrasive cleaners. Avoid exposing the unit to moisture or extreme temperatures. Periodically check the connections and cables for wear.
User questions about MIDI 4x Loop G-LAB
0 question about this device. Answer the ones you know or ask your own.
Ask a new question about this device
No questions yet. Be the first to ask one.
Download the instructions for your Guitar amplifier in PDF format for free! Find your manual MIDI 4x Loop - G-LAB and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. MIDI 4x Loop by G-LAB.
USER MANUAL MIDI 4x Loop G-LAB
Manual assistant
Powered by Anthropic
Waiting for your message
Product information
Brand : G-LAB
Model : MIDI 4x Loop
Category : Guitar amplifier