Enclosure not stated · 7 knobs
Amp Tone Stack + Gain Recovery
Based on the Friedman BE-OD· 7 other boards clone it
- Category
- Preamp / Amp-in-a-box· Pedal Development Tool
- Controls
- Bass · Mids · Treble · Volume · Presence · Deep · Mid
- Difficulty
- Advanced
- Price
- €7.90out 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
Would you like to take a more classic, and amp alike approach to your build? Just add this EQ section to it!
Introduction
Recreates the 3 bands tone stack in the same way as it’s on tube amplifier and on many other famous amp in a box pedals (Catalinbread dirty little secret). This board allows you to experiment with different values in order to get different tone responses based on many classic amps.
Following the tone section, we have an external Presence control that follows the same amp a like logic. As usually, this tone stacks suck a lot of volume and gain, we have included at last one gain recovery stage. If you want to go with a more vintage approach you can easily bypass this last section.
Controls
• Bass
• Mid
• Pres
• Treble
For any technical questions regarding this build don’t forget to check out our Facebook Group and our forum at Free Stomp Boxes.
EQ Development-tool – Building Docs
Amp Tone Stack + Gain Recovery – Building Docs
Amp Tone Stack + Gain Recovery – 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 51 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 19 | ||||
| R1 | 2K2 | 2.2k | ||
| R2 | 33K | 33k | ||
| R3 | 33K | 33k | ||
| R4 | 2K2 | 2.2k | ||
| R5 | 470K | 470k | ||
| R6 | 2K2 | 2.2k | ||
| R7 | 2k2 | 2.2k | ||
| R8 | 22K | 22k | ||
| R9 | 100K | 100k | ||
| R10 | 2K2 | 2.2k | ||
| R11 | 150k | 150k | ||
| R12 | 100k | 100k | ||
| R13 | 20K | 20k | ||
| R14 | 22K | 22k | ||
| R15 | 2k2 | 2.2k | ||
| R22 | 10K | 10k | ||
| R23 | 10K | 10k | ||
| R16 | 20K | 20k | ||
| R17 | 1K5 | 1.5k | ||
| Capacitors 17 | ||||
| C19 | 22uf | 22u | ||
| C1 | 10n | 10n | ||
| C2 | 4n7 | 4.7n | ||
| C3 | 22n | 22n | ||
| C4 | 220n | 220n | ||
| C5 | 2n2 | 2.2n | ||
| C6 | 10n | 10n | ||
| C7 | 220n | 220n | ||
| C8 | 2n2 | 2.2n | ||
| C10 | 100n | 100n | ||
| C9 | 10u | 10u | ||
| C13 | 2u2 | 2.2u | ||
| C22 | 10u | 10u | ||
| C11 | 220nf | 220n | ||
| C14 | 100n | 100n | ||
| C12 | 100u | 100u | ||
| C15 | 22u | 22u | ||
| Diodes 1 | ||||
| D1 | 1n5817 | 1N5817 | ||
| ICs 3 | ||||
| IC1 | TL072 | TL072 | ||
| IC2 | TL072 | TL072 | ||
| IC3 | TLO74 | TLO74 | ||
| Potentiometers 9 | ||||
| BASS | 100KC | C100k | Potentiometer | |
| MIDS | 100KC | C100k | Potentiometer | |
| TREBLE | 100KB | B100k | Potentiometer | |
| VOL | 50KA | A50k | Potentiometer | |
| PRESENCE | 10K | 10k | Potentiometer | |
| DEEP | 25KC | C25k | Potentiometer | |
| MID | 25KB | B25k | Potentiometer | |
| PRES | 25KC | C25k | Potentiometer | |
| VOLUME | A50K | A50k | Potentiometer | |
| LEDs 2 | ||||
| LED1 | 3mm LED | 3MM LED | ||
| LED2 | 3mm LED | 3MM LED | ||
Other boards based on the Friedman BE-OD
- Tempest Aion FX · 125B · $12.50
- BE-My-OD Five Cats Pedals · 1590BB · £5.00
- Active EQ PCB Guitar Mania · €7.90
- Falcon EQ PCB Guitar Mania · 125B · €7.90
- Freeman BE-OD PCB Guitar Mania · 125B · €9.90
- Freeman Supreme PCB Guitar Mania · 1590BB · €11.90
- Hybrid EQ PCB Guitar Mania · €7.90