Akashic Guitar effects PCB lookup
GAINRANGE

125B · 2 knobs

PCB Guitar Mania

Sabbatical Drive

Based on the Catalinbread Sabbra Cadabra· 2 other boards clone it

Category
Distortion· Distortion/booster
Controls
Gain · Range
Difficulty
Intermediate
Price
€11.90out 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

Inspired by Catalinbread’s Sabbra Cadabra, it features a two-circuit combination between a custom-tuned Rangemaster-based booster and the preamp section of the Tony Iommi’s Laney Supergroup. The outcome is a machine that delivers the greatest doom riffs; it’s like having Black Sabbath inside a box.

Introduction

Sabbatical Drive delivers one of the most influential tones in the pantheon of rock by capturing the soul of the famous Tony Iommi’s Laney Supergroup amplifiers pushed by the Dallas Rangemaster treble booster. All of this is possible by changing the original tubes with modern JFET transistors.

The outside controls give you everything you need to dial in classic riffs or today’s doom. Its Volume 4, Presence and Gain controls will allow you to shape the dark tone of the Sabbatical. But the Range knob is the one that provides the most incredible diversity in tone: with it, you can mod the treble-boost section of the circuit, ending up anywhere from dedicated treble boost to full-range boost. This will grant you all the versatility you need, allowing you to access a high range of sounds to explore. Besides that, consider the effects your guitar’s onboard controls will have on the sound, providing even more realm for a creative approach.

Controls

• Gain

• Presence

• Range

• Vol4

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.

Sabbatical Drive 1v1 – Building docs

Sabbatical Drive – Building Docs

Sabbatical Drive – Drilling Template

Schematic

The schematic is in the vendor's build document, page 5. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 59 rows

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RefValueNormalizedTypeNotes
Resistors 30
R261k1k
R272m20.0022
R11m1M
R282m20.0022
R2220k220k
R294k74.7k
R368k68k
R304k74.7k
R410k10k
R54k74.7k
R647r47
R71m1M
R81m1M
R91m1M
R1033k33k
R11750k750k
R121k1k
R131k51.5k
R1447k47k
R15470k470k
R16470k470k
R171m1M
R181m1M
R191k1k
R20820r820
R21100k100k
R2256k56k
R23220k220k
R2433k33k
R2522k22k
Capacitors 19
C922u22u
C112u22.2u
C122u22.2u
C19100u100u
C168n68n
C24n74.7n
C347p47p
C4100n100n
C7100n100n
C822n22n
C1047p47p
C13270p270p
C1422n22n
C1522n22n
C1622n22n
C17220n220n
C1810n10n
C547u47u
C62u22.2u
Diodes 1
D11n58171N5817
Transistors 6
Q1BC184BC184
Q2MPF4393*MPF4393
Q3MPF4393*MPF4393
Q4MPF4393*MPF4393
Q5MPF4393*MPF4393
Q6MPF4393*MPF4393
Potentiometers 2
GAIN1MAA1MPotentiometer
RANGE500KCC500kPotentiometer
LEDs 1
D2LED.1LED.1

Other boards based on the Catalinbread Sabbra Cadabra