Akashic Guitar effects PCB lookup
GAINMASTERTREBLEBASSMIDS

1590B · 5 knobs

Fuzz Dog· MegaWatt

MegaHIWatt - Vintage HIWATT Amp Tone

Based on the WiiO / RAH

Category
Overdrive· OD/Dist/Preamp
Controls
Gain · Master · Treble · Bass · Mids
Difficulty
Medium
Price
£38.40
Tags
od-distortion

From the vendor

One PCB, two different circuits based on 70s Hiwatt amp tones. Shape your sound into something close to two classics: • NORTH - based on Pete Townsend's sound on The Who - Live at Leeds. • SOUTH - Page's sound from Led Zeppelin at the Royal Albert Hall, 1970 Either can be made on the same PCB (though not both at once - sorry!) NORTH is simpler in both construction and tone shaping, having Vol, Gain, Bass and Treble. The tone controls are highly interactive. SOUTH adds a Mids control, which adds more interaction into the tone stack mix. Both versions are very responsive to playing dynamics. 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. If you want the kit pre-built you must select the full kit/enclosure option and vertical-mount pots. Don't forget to select knobs from the set-screw section too. Inspired by: WiiO / RAH Difficulty: Medium PCB size: 50 x 50mm Knobs required: 4 (North), 5 (South) Enclosure: 1590B Direct-Connect compatible (4-way) Download the 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 55 rows

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RefValueNormalizedTypeNotes
Resistors 21
R110M10M
R21K1k
R33K33.3k
R43K33.3k
R512K12k
R6200K200k
R710M10M
R83K33.3k
R93K33.3k
R11100K100k
R1210K10k
R15130R130
R163K33.3k
R173K33.3k
R1810M10M
R1912K12k
R2012K12k
R2162K62k
R22100K100k
R10100K100k
R14220K220k
Capacitors 23
C1250p250p
C2100n100n
C3220n220n
C5470n470n
C647n47n
C810n10n
C94n74.7n
C10470p470p
C12100n100n
C142n22.2n
C152n22.2n
C1610n10n
C17100u100uelec
C18100u100uelec
C194u74.7uelec
C20100u100uelec
C2110u10uelec
C22100u100uelec
C2310u10uelec
C447p47p
C71n1n
C111n1n
C13220n220n
Diodes 3
D19.1V9.1V
D29.1V9.1V
D39.1V9.1V
Transistors 3
Q1BS170BS170
Q2BS170BS170
Q3BS170BS170
Potentiometers 5
GAIN500KAA500kPotentiometer
MASTER100KAA100kPotentiometer
TREBLE500KBB500kPotentiometer
BASS500KAA500kPotentiometer
MIDS100KBB100kPotentiometer