Akashic Guitar effects PCB lookup
BIASTONEVOL

1590B · 3 knobs

Fuzz Dog· beatvox

BeatleVox

Based on the Vox UL730 Distortion / Aclam The Mocker

Category
Fuzz
Controls
Bias · Tone · Vol
Difficulty
Easy
Price
£33.60
Tags
fuzz

From the vendor

Love them, hate them, or roll your eyes with utter indifference - The Beatles kicked out some fantastic tone. Here's a little box of fuzz that will get you near to the lead tones from Revolver and Sgt Peppers.

Based on the distortion (a fuzz really, but hey....) circuit in the Vox UL730 amp, this thing rips. An added bias control lets you tweak around with it as some units were biased differently to others, and it makes a big difference to the tone.

Because we care we've sourced some of the obsolete OA200 diodes used in the original amps and the pedal recreation. How cool is that? We can only assume the limited run of the pedal is down to the lack of these parts.

If you want the PCB without parts there's a link for that at the bottom of the page.

Partial kit: PCB, all board-mounted components, pots.

Full kit: As above, plus footswitch and appropriate daughterboard/components for your selected bypass type (see Downloads section for details of those), jack sockets, DC socket, battery snap, hook-up wire, LED.

Enclosure (pre-drilled) is available as an option with full kits, and will not take a battery. Knobs are not included.

Builds are only available with full kits including enclosures. Please choose appropriate knobs.

Inspired by: Vox UL730 Distortion / Aclam The Mocker

Difficulty: Easy

PCB size: 50 x 33mm

Knobs required: 3

Enclosure: 1590B

Direct Connect compatible (4 way)

Download INSTRUCTION PDF

Schematic

The schematic is in the vendor's build document, page 3. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 35 rows

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RefValueNormalizedTypeNotes
Resistors 15
R11M1M
R233K33k
R3220K220k
R4100K100k
R522K22k
R610K10k
R73K33.3k
R85K65.6k
R91K21.2k
R103K33.3k
R1110K10k
R1210K10k
R131M1M
R1410K10k
R15100R100
Capacitors 11
C12u22.2uelec
C210u10uelec
C310u10uelec
C4220u220uelec
C51u1u
C610n10n
C710u10uelec
C810u10uelec
C910u10uelec
C10220u220uelec
C11100n100n
Diodes 3
D2OA200OA200
D3OA200OA200
D11N58171N5817
Transistors 3
Q1BC547BC547
Q2BC547BC547
Q3BC547BC547
Potentiometers 3
BIAS10KBB10kPotentiometer
TONE10KBB10kPotentiometer
VOL10KBB10kPotentiometer