Product images are provided for reference and may not represent the exact model, configuration, or included components.

At A Glance

Input Impedance
1 MΩ
Output Impedance
1 kΩ
Signal To Noise Ratio - Heel Down
90 dBV
Signal To Noise Ratio - Toe Down
97 dBV
Wah Range - 1st Position (Full CCW
440 Hz to 2.2 kHz
Wah Range - 2nd Position
400 Hz to 1.9 kHz
Wah Range - 3rd Position
375 Hz to 1.8 kHz
Wah Range - 4th Position
345 Hz to 1.6 kHz
Wah Range - 5th Position
395 Hz to 1.4 kHz
Wah Range - 6th Position
250 Hz to 1.2 kHz
Filter Gain
15 dB
Boost Control Range
0.1 dB to 17 dB Bypass
True Hardwire Current Draw
2.5 mA
Power Supply
DC 9 volts
Description

Dunlop produced the 535Q-U Cry Baby Multi-Wah as an expanded, user-configurable take on the classic Cry Baby wah pedal. It occupied a higher position in the Cry Baby line than standard fixed-range wah pedals, offering the player significantly more control over the character of the wah effect.

The pedal centered on three primary controls: a six-position Range Selector switch, a Variable Q control, and a switchable boost circuit. The Range Selector stepped through six discrete frequency windows, moving from a wide sweep of 440 Hz–2.2 kHz at the first position down to a narrower 250 Hz–1.2 kHz at the sixth, allowing the wah character to shift from bright and vocal to darker and more compressed. The Variable Q control adjusted the resonance peak of the filter, which governs how sharp or broad the wah sweep sounds. The switchable boost circuit provided up to 17 dB of boost above bypass level, with a minimum of 0.1 dB, making it usable as a mild presence lift or a more aggressive signal push. Filter gain was rated at 15 dB. The unit drew 2.5 mA in true hardwire bypass mode and ran on a standard DC 9-volt supply, with input impedance of 1 MΩ and output impedance of 1 kΩ.

Owners tracking down replacement components or looking to service the pedal's switching and potentiometer assembly should consult a qualified guitar technician or electronics repair specialist familiar with effects pedal circuitry.

Q&A
Have Questions?
The owner archive

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

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.

Comments

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.

RELATED PRODUCTS

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
Ask Before You Buy

Mods & Upgrades

  • Upgrade paths for the guitars you already own
  • Wiring, routing, and hardware swap guidance
  • Advice from people who actually do the mods
Talk Mods

The Vault

  • Discontinued and EOL guitars kept on record
  • Specs, history, and known part compatibility
  • Share your builds and mods with the community
Enter The Vault