Akashic Guitar effects PCB lookup
BLENDDRIVELEVEL

125B · 3 knobs

PCB Guitar Mania

Black Mirror

Based on the Darkglass B3K· 1 other board clones it

Category
Overdrive· Bass Drive
Controls
Blend · Drive · Level
Difficulty
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

The Black Mirror is a defined and powerful bass overdrive, with an intuitive format that contains brutality and clarity at the same time.

Introduction

Black Mirror delivers killer waves in an intuitive friendly-user way. Build it and immediately have the sound of a high-powered tube amp at your disposal! You can then use the simple controls to go from a tight, responsive boost to an all-out distorted assault.

Controls

• Attack Switch: Sets the amount of treble content to saturate.

• Grunt Switch: Sets the amount of low-frequency content to saturate by selecting between three different bass boost levels before the clipping stage.

• Blend control: Mixes the clean input signal with the overdriven signal.

• EQ Loop allows you to connect an external EQ before the blend knob.

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.

Black Mirror 1.2v – Building Docs

Black Mirror 1.1v – Building Docs

Black Mirror 1.0v – Building Docs

Black Mirror – 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 68 rows

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RefValueNormalizedTypeNotes
Resistors 31
R11m1M
R21m1M
R310k10k
R4100k100k
R51m1M
R63k33.3k
R7200k200k
R8470k470k
R91m1M
R101m1M
R11470k470k
R126k86.8k
R131m1M
R1422k22k
R15330k330k
R166k86.8k
R173k33.3k
R18470k470k
R19100r100
R2010k10k
R211m1M
R22100k100k
R2333k33k
R2410k10k
R2522k22k
R2622k22k
R2747k47k
R281k1k
R29100k100k
R3010k10k
R3110k10k
Capacitors 25
C1100n100n
C21n1n
C3220n220n
C422n22n
C522n22n
C622n22n
C7100n100n
C8220pf220p
C922n22n
C1022pf22p
C114n74.7n
C1222n22n
C13220n220n
C1422pf22p
C151uf1u
C16680pf680p
C1722n22n
C182n22.2n
C192n22.2n
C201n1n
C211uf1u
C23330n330n
C272n22.2n
C22100uf100u
C24100uf100u
Diodes 3
D11n41481N4148
D21n41481N4148
D31n40011N4001
ICs 4
IC1TL072TL072
IC2TL072TL072
IC34049N4049N
IC4TL072TL072
Potentiometers 3
BLEND100KBB100kPotentiometer
DRIVE100KCC100kPotentiometer
LEVEL100KAA100kPotentiometer
LEDs 1
D4LEDLED
Jacks & sockets 1
J201Q1*Q1*

Other boards based on the Darkglass B3K