Akashic Guitar effects PCB lookup
VOLBIAS

1590B · 2 knobs

Fuzz Dog· MrC

Mr Creosote

Based on the Phat Phuk B

Category
Boost
Controls
Vol · Bias
Difficulty
Easy
Price
£31.20
Tags
od-distortion

From the vendor

Wafer thin? Hell no. This is a big, fat boost.

Tuned specifically for bass, the FET input will add sparkle and life to your signal, whipping that top end into a frenzy. The germanium can at the end adds some grit to the sauce - adjust the bias to taste.

You can opt for an internal bias setting to set-and-forget your grit, or go for an external pot if you like to tinker.

Works just as well on guitar - honestly!

Spots on the board for both through-hole or SMT FET - save a couple of quid if you're handy with the tiny stuff.

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.

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

Inspired by: Phat Phuk B

Difficulty: Easy

PCB size: 50 x 25mm

Knobs required: 1 / 2

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 19 rows

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RefValueNormalizedTypeNotes
Resistors 9
R12M22.2M
R22M22.2M
R33K33.3k
R42M22.2M
R5390K390k
R610K10k
R791K91k
R8100R100
R9100R100
Capacitors 5
C12u22.2uElectrolytic capacitor
C210u10uElectrolytic capacitor
C34u74.7uElectrolytic capacitor
C410u10uElectrolytic capacitor
C5100u100uElectrolytic capacitor
Diodes 1
D11N58171N5817
Transistors 2
Q1J201/MMBFJ201*J201/MMBFJ201
Q2PNP germaniumPNP GERMANIUM
Potentiometers 2
VOL250KA**250KA**
BIAS2KB or 2K trimmer***2KB OR 2K TRIMMER***