Akashic Guitar effects PCB lookup
VOLUMEGAINTONE

125B · 3 knobs

PCB Guitar Mania

Absolute Distortion

Based on the Wampler Sovereign

Category
Distortion· High Gain Drive
Controls
Volume · Gain · Tone
Difficulty
Average/Advanced
Price
€9.90out of stock

Heads up Builders widely report inconsistent quality from PCB Guitar Mania boards, and whether a given board works is a gamble. Read recent forum reports before ordering.

From the vendor

Project overview:

Based on Wampler Sovereign, this circuit is a versatile beast, with plenty of gain and full of harmonic overtones, always sounding organic and big. Surprisingly shapeable and responsive, the non-traditional gain and EQ controls allow you to tune the pedal to suit any setup, and instead of just emphasizing a certain frequency range, they actually change the texture of the gain.

Besides the traditional Volume, Gain, and Tone, this board features a very handy Contour control as well as two toggles on-board, Voice selects in between vintage and Modern, and a Boost switch to give your drive an extra push.

Introduction:

Do I have to say more than it’s based on the Wampler Sovereign ? With minor changes in the circuit and either T0-92 or SMD pads for easy sourcing the parts or to avoid soldering SMDs just how you prefer to do it. Also, the Layout of the PCB allows top-mounted jacks. Other than that, Brian (like always) didn’t leave much open where I could find something to tweak and make it better.

Just like the Original Pedal, it comes with Volume, Gain, Tone, and a very well thought Mid Contour knob to shape from everywhere in between, rocking vintage Overdrive to high Gain.

The EQ section, which is based on the Big Muff Tone stack with contour mod, has a very wide range like all his pedals have to give you the control you are looking for and like this wasn’t enough it reacts very well with the Volume Knob of our guitar.

The internal trimmer controls how much voltage is feed into Q5; dial it by ear till you find the sweet spot you like, but remember lower voltages will give you a dirtier sound with lower output, while higher voltages will add more headroom and clarity to it.

Highly recommended to give this a go.

Controls

• Gain

• Volume

• Tone

• Contour

• Boost switch

• Voice switch

For further analysis on this circuit, take a look at this thread on Free Stomp Boxes Forum.

For any technical questions regarding this build, don’t forget to check out our Facebook Group and our forum at Free Stomp Boxes.

Absolute Distortion 1.1v – Building Docs

Absolute Distortion 1.0v – Building Docs

Absolute Distortion – Drilling template

Schematic

The schematic is in the vendor's build document, page 6. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 62 rows

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Resistors 30
R11K1k
R21M1M
R31M1M
R410K10k
R51K1k
R61M1M
R71M1M
R81M1M
R91M1M
R10220K220k
R114K74.7k
R1215K15k
R131K1k
R141M1M
R151M1M
R161M1M
R1747K47k
R18100K100k
R192K22.2k
R2133K33k
R2268K68k
R2310K10k
R2410K10k
R2547k47k
R261M1M
R2733K33k
R28100K100k
R2910K10k
R3010K10k
R3110K10k
Capacitors 21
C1680p680p
C247n47n
C31u1u
C456n56n
C522n22n
C651p51p
C7220p220p
C8220n220n
C922n22n
C101u1u
C1110n10n
C1210n10n
C134N74.7n
C1433n33n
C153n33.3n
C161u1u
C1851p51p
C191u1u
C1710u10u
C20220u220u
C21100u100u
Diodes 1
D01N58171N5817
Transistors 5
Q1J201J201
Q2J201J201
Q3J201J201
Q4J201J201
Q5J201J201
Potentiometers 3
VOLUMEA100KA100kPotentiometer
GAINA500KA500kPotentiometer
TONEB100KB100kPotentiometer
Trimmers 1
TRIM50K50kTrimmer
Jacks & sockets 1
J201Q1Q1