Akashic Guitar effects circuit lookup
BASSGAINMIDTREBVOL

1590B · 5 knobs

Fuzz Dog· acoupre

AcouPre

Based on the Pure Acoustic Preamp

Category
Preamp / Amp-in-a-box· OD/Dist/Preamp
Controls
Bass · Gain · Mid · Treb · Vol
Difficulty
Medium
Price
£30.00
Tags
od-distortion

From the vendor

Developed for acoustic guitars, but just as at home with an electric plugged in. Or a violin. Or a DIY thingumaplonk.

Simple but effective preamp with nicely banded bass, mid and treble controls. The original has an internal gain trimmer but what's the deal? That babe is on the outside here, where it belongs.

With +/-20dB on the bass and mids, and 16dB on the treble you have a lot of space for shaping your tone to perfection.

The kit is supplied with vertical-mount pots which have 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 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 and vertical-mount pots. Please choose appropriate knobs.

Inspired by: Pure Acoustic Preamp

Difficulty: Medium

PCB size: 50 x 33mm

Knobs required: 5

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 33 rows

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Variant
RefValueNormalizedTypeNotes
Resistors 16
R11M1M
R210K10k
R31M1M
R41M1M
R510K10k
R610K10k
R71K1k
R815K15k
R910K10k
R1018K18k
R111K1k
R1210K10k
R1310R10
R14100K100k
R15100K100k
R16100R100
Capacitors 10
C147n47n
C21u1uElectrolytic capacitor
C3470n470n
C43n33.3n
C522n22n
C610n10n
C722n22n
C81u1uElectrolytic capacitor
C9100u100uElectrolytic capacitor
C10100u100uElectrolytic capacitor
Diodes 1
D11N58171N5817
ICs 1
IC1TL082TL082
Potentiometers 5
BASS100KBB100kPotentiometer
GAIN100KBB100kPotentiometer
MID100KBB100kPotentiometer
TREB100KBB100kPotentiometer
VOL100KAA100kPotentiometer