125B · 3 knobs
Black Mirror
Based on the Darkglass Microtubes B3K· 7 other boards clone it
- Category
- Overdrive· Bass Drive
- 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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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 31 | ||||
| R1 | 1m | 1M | ||
| R2 | 1m | 1M | ||
| R3 | 10k | 10k | ||
| R4 | 100k | 100k | ||
| R5 | 1m | 1M | ||
| R6 | 3k3 | 3.3k | ||
| R7 | 200k | 200k | ||
| R8 | 470k | 470k | ||
| R9 | 1m | 1M | ||
| R10 | 1m | 1M | ||
| R11 | 470k | 470k | ||
| R12 | 6k8 | 6.8k | ||
| R13 | 1m | 1M | ||
| R14 | 22k | 22k | ||
| R15 | 330k | 330k | ||
| R16 | 6k8 | 6.8k | ||
| R17 | 3k3 | 3.3k | ||
| R18 | 470k | 470k | ||
| R19 | 100r | 100 | ||
| R20 | 10k | 10k | ||
| R21 | 1m | 1M | ||
| R22 | 100k | 100k | ||
| R23 | 33k | 33k | ||
| R24 | 10k | 10k | ||
| R25 | 22k | 22k | ||
| R26 | 22k | 22k | ||
| R27 | 47k | 47k | ||
| R28 | 1k | 1k | ||
| R29 | 100k | 100k | ||
| R30 | 10k | 10k | ||
| R31 | 10k | 10k | ||
| Capacitors 25 | ||||
| C1 | 100n | 100n | ||
| C2 | 1n | 1n | ||
| C3 | 220n | 220n | ||
| C4 | 22n | 22n | ||
| C5 | 22n | 22n | ||
| C6 | 22n | 22n | ||
| C7 | 100n | 100n | ||
| C8 | 220pf | 220p | ||
| C9 | 22n | 22n | ||
| C10 | 22pf | 22p | ||
| C11 | 4n7 | 4.7n | ||
| C12 | 22n | 22n | ||
| C13 | 220n | 220n | ||
| C14 | 22pf | 22p | ||
| C15 | 1uf | 1u | ||
| C16 | 680pf | 680p | ||
| C17 | 22n | 22n | ||
| C18 | 2n2 | 2.2n | ||
| C19 | 2n2 | 2.2n | ||
| C20 | 1n | 1n | ||
| C21 | 1uf | 1u | ||
| C23 | 330n | 330n | ||
| C27 | 2n2 | 2.2n | ||
| C22 | 100uf | 100u | ||
| C24 | 100uf | 100u | ||
| Diodes 3 | ||||
| D1 | 1n4148 | 1N4148 | ||
| D2 | 1n4148 | 1N4148 | ||
| D3 | 1n4001 | 1N4001 | ||
| ICs 4 | ||||
| IC1 | TL072 | TL072 | ||
| IC2 | TL072 | TL072 | ||
| IC3 | 4049N | 4049N | ||
| IC4 | TL072 | TL072 | ||
| Potentiometers 3 | ||||
| BLEND | 100KB | B100k | Potentiometer | |
| DRIVE | 100KC | C100k | Potentiometer | |
| LEVEL | 100KA | A100k | Potentiometer | |
| LEDs 1 | ||||
| D4 | LED | LED | ||
| Jacks & sockets 1 | ||||
| J201 | Q1* | Q1* | ||
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