Aclam Guitars The Mocker

The Mocker is a fuzz pedal from Aclam Guitars that reproduces the built-in fuzz circuit of the Vox UL730 amplifier. Aclam calls it a faithful replica of the internal fuzz circuit of their own VOX UL730, serial number 3042, and an extended version of the original Vox UL series fuzz circuit that retains its essence¹. Where the original amp's fuzz had a preset low pass filter, Aclam replaced the fixed resistor in that path with a Tone potentiometer, turned clockwise for a brighter sound¹.

Production of The Mocker has continued beyond its first units: units from serial number 201 upwards carry power management protection that lets you know if you are overpowering the pedal or using a reverse polarity power supply¹. The pedal is covered by a two-year warranty from the purchase date, under the conditions and supporting evidence regulated by Spanish Legislation, non-transferable and requiring proof of purchase and the serial number¹.

The Vox UL730 fuzz in a pedal

The Vox UL series amps carried a fuzz circuit built in, and The Mocker reproduces the one inside Aclam's own VOX UL730, serial number 3042¹. The pedal is an extended version of the original circuit: Aclam kept the essence of the UL series fuzz but replaced the fixed resistor in its preset low pass filter with a Tone potentiometer, so a player can now turn clockwise for a brighter sound where the original amp was fixed¹.

The clipping comes from New Old Stock Philips OA200 diodes wired for hard clipping, the very same diode type found on the UL amp series¹. Pedal of the Day described the result as "a seemingly simple three-knob fuzz distortion" and called it "another masterpiece"².

The controls: Bias, Tone and Vol

Three knobs and a footswitch run the pedal¹.

The Bias knob is the heart of the pedal. Aclam describes three distinct regions¹²⁴:

• Counterclockwise: the fuzz becomes gated and spluttery, with notes decaying quickly to dead silence, the behavior found on the Vox UL730¹.
• Clockwise: an open tone with plenty of gain and sustain, which Aclam says is the tone the Vox UL series had when it left the production line in 1966¹.
• Fully clockwise: more compressed, with what Aclam calls a sort of PWM component, ideal for high gain solos and lead parts¹.

Pedal of the Day found the Bias control "capable of landing on so musical terrains, from vintage to modern, by tweaking a single knob"², and Delicious Audio likewise noted the Bias and Tone controls can take the pedal from vintage to modern⁵.

Power and connections

The Mocker runs on a 9V DC center negative supply with the standard Boss type 2.1mm connector, drawing about 12mA, and the manual calls for a supply rated at 50mA minimum¹. There is one input jack and one output jack¹.

The enclosure is a custom light aluminum box with a hammered finish paint, designed to fit Aclam's Smart Track pedalboards, with side thumb screws that lock the pedal into place¹. In the box you get the pedal, an anti-sliding rubber pad and a Velcro pad¹. The pedal carries a two-year warranty from the purchase date under Spanish legislation, non-transferable, requiring proof of purchase and the serial number¹.

History and versions

The Mocker's production did not stop at its earliest units. Units from serial number 201 upwards carry power management protection that lets you know if you are overpowering your pedal or using a reverse polarity power supply¹. The manual itself is at version 1.2, and the pedal's reference number appears as AP0050 in the manual and AP0050-2 on the product page¹⁶.

Units from serial number 201 onwards differ from earlier units in one practical way: they carry the power management protection that warns of overpowering or reverse polarity¹. The pedal uses a custom light aluminum enclosure with hammered finish paint, designed around Aclam's Smart Track fastening system, with side thumb screws that lock the pedal into Aclam pedalboards¹.

A Scratch and Dent version of The Mocker (reference AP0050-B) appeared on Aclam's store with next day shipping, but was marked sold out as of October 2026⁷.

The Beatles connection

Aclam ties the pedal's sound to the Vox UL series amps as they left the production line in 1966: with the Bias knob turned clockwise, the maker describes an open tone with plenty of gain and sustain, "the tone the VOX UL series had when they got out of the production line in 1966"¹. The Tone knob, turned clockwise, gives a brighter sound than that fixed original voicing¹.

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