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At A Glance
- Input Impedance
- 1 MΩ
- Output Impedance
- 5.5 kΩ
- Nominal Intput Level
- -22 dBV
- Maximum Output Level
- +3 dBV
- Noise Floor
- 84 dBV
- Tone Control
- ±6.5 dB at 3 kHz
- Distortion Gain
- 22 dB to 50 dB, 1 kHz
- Bypass
- True Hardwire
- Current Draw
- 3.5 mA
- Power Supply
- 9 Volts DC
Dunlop produced the M115-U as part of the MXR Distortion III line, positioning it as a distortion pedal capable of covering a wide gain range — from overdrive-weight clipping through to heavy distortion tones.
The unit operates on a 9-volt DC supply and draws 3.5 mA. Input impedance is rated at 1 MΩ with an output impedance of 5.5 kΩ. Gain is adjustable across a range of 22 dB to 50 dB at 1 kHz, and a tone control provides ±6.5 dB of cut or boost centred at 3 kHz. Nominal input level is −22 dBV, maximum output level is +3 dBV, and the noise floor is rated at 84 dBV. Bypass is implemented as true hardwire, leaving the signal path unaffected when the pedal is disengaged.
Owners sourcing a replacement power supply should confirm the 9-volt DC polarity and current requirement against their existing supply before substituting. For any internal service or fault diagnosis, a qualified guitar technician or electronics repair technician is best placed to assist.
STRAIGHT TALK
What Stands Out
Keep In Mind
From the people who own them
Nothing in The Vault is for sale. These records exist so the instruments stay documented after the manufacturer moves on — and the most useful part of that record is what owners add to it.
Owner photos
Put yours on the record.
The catalog shot showed one finish, under one light, a long time ago. Yours has been played. Photos from owners are what the next person finds when they are trying to identify a part, match a finish, or work out whether the one they just bought is really what the seller said it was.
What do you know about this one?
Specs only go so far. What actually fits, what breaks first, what the factory got right and what everyone ends up changing — that lives with the people who own them, not in a datasheet. Post what you know and it stays on this page for whoever comes looking next.
Build Your Complete System
Manufacturer-verified compatible cameras, recorders, mounts, accessories, and licenses for this product. Adjust quantities and add the entire bundle to your cart in one click.
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Gear Help, Handled
From spec questions to full builds — players who have lived this gear since 2007.
Since 2007
Fit & Compatibility
- Bridge, tuner, and nut fit confirmed for your guitar
- Pickup and electronics compatibility checks
- Pedal power and amp/cab impedance matching
Mods & Upgrades
- Upgrade paths for the guitars you already own
- Wiring, routing, and hardware swap guidance
- Advice from people who actually do the mods
The Vault
- Discontinued and EOL guitars kept on record
- Specs, history, and known part compatibility
- Share your builds and mods with the community
