Akashic Guitar effects PCB lookup
GAINTONEVOL

1590B · 3 knobs

Fuzz Dog· HeavScr

Heavy Screamer

Based on the Fortin modded 808 Tube Screamer

Category
Overdrive· OD/Dist/Preamp
Controls
Gain · Tone · Vol
Difficulty
Easy
Price
£31.20
Tags
od-distortion

From the vendor

Yet Another Tube Screamer, sure...

This one does something a little different, and is perfect for all you high-gain junkies.

The differences between this and a standard 808 are apparent when running it on its own into a clean amp. Lots more output, more saturation and accentuated upper mids. Where it really does the business is pushing a gainy amp. Here the extra boost and mids start to sing, giving you that tight metal chug.

Supplied with board-mounted pots with round shafts, so you'll need set-screw fitting knobs).

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 only available with full kits, and won't take a battery . Knobs are not included.

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

Inspired by: Fortin modded 808 Tube Screamer

Difficulty: Easy

PCB size: 50 x 40mm

Knobs required: 3

Enclosure: 1590B

Direct Connect compatible (4 way)

Download the 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 42 rows

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RefValueNormalizedTypeNotes
Resistors 19
R12M22.2M
R21K1k
R3510K510k
R410K10k
R510K10k
R61K81.8k
R733K33k
R8220K220k
R91K1k
R1010K10k
R11220R220
R121K1k
R131K1k
R14510K510k
R1510K10k
R1610K10k
R1710K10k
R1810K10k
R1910K10k
Capacitors 12
C147n47n
C21u1u
C351p51p
C4220n220n
C5220n220n
C61u1u
C7100n100n
C8100n100n
C910u10uelec
C10100n100n
C11100u100uelec
C12100u100uelec
Diodes 5
D23mm3MM
D33mm3MM
D41N41481N4148
D51N41481N4148
D11N58171N5817
Transistors 2
Q12SC18152SC1815
Q22SC18152SC1815
ICs 1
IC145584558
Potentiometers 3
GAIN500KAA500kPotentiometer
TONE20KWW20kPotentiometer
VOL100KBB100kPotentiometer