Akashic Guitar effects PCB lookup
VOLBIAS

1590B · 2 knobs

Fuzz Dog· bhug

Bearhug Compressor

Based on the Torn's Peaker / US / Never Drive / Aenima· 1 other board clones it

Category
Compressor· Compression
Controls
Vol · Bias
Difficulty
Easy
Price
£31.20
Tags
compressors

From the vendor

Jon Patton's simple, transparent compressor circuit. Sitting neatly in the middle ground between ultra-subtle comps and super-skwishers.

There's a toggle to switch between long and short decay settings to suit your mood.

Warning - this one isn't keen on heavy playing dynamics. You will get distortion if you're mashing those strings.

Available with through-hole or SMT FET, so if you're confident with the fiddly soldering you can save a quid.

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 can take a battery if desired with footswitch positioned 22mm higher, closer to the controls. Knobs are not included.

Inspired by: Torn's Peaker / US / Never Drive / Aenima

Difficulty: Easy

PCB size: 50 x 33mm

Knobs required: 2 (or 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 29 rows

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RefValueNormalizedTypeNotes
Resistors 11
R110M10M
R22K72.7k
R310M10M
R42K72.7k
R510M10M
R647R47
R72K22.2k
R822K22k
R9100K100k
R101K1k
R111M1M
Capacitors 10
C1100u100uElectrolytic capacitor
C2100n100n
C310n10n
C447p47p
C510n10n
C6100n100n
C71u1u
C810u10uElectrolytic capacitor
C9100u100uElectrolytic capacitor
C104u74.7uElectrolytic capacitor
Diodes 3
D11N58171N5817
D29V1 Zener9V1 ZENER
D3-41N41481N4148
Transistors 3
Q1BS170BS170
Q22N5457/MMBF54572N5457/MMBF5457
Q3MPSA18MPSA18
Potentiometers 2
VOL50KBB50k
BIAS100K Trimmer100K TRIMMER

Other boards based on the Torn's Peaker / US / Never Drive / Aenima