1590BBS · 4 knobs
Sparsh V.2
Based on the Guyatone PS-025 Touch Overdrive· 1 other board clones it
- Category
- Overdrive· Overdrive, Compressor
- Price
- $15.00in stock
From the vendor
Clone of the Guyatone PS-025 Touch Overdrive. Another jewel from the Guyatone PS stable. We converted the original flip-flop type bypass to soft touch silent relay switching. Built in compressor, and Dynamics control, allows for a very nuanced overdrive. Does everything from mellow dirt, to all out screaming leads. One of the nicest overdrives ever produced. The lack of a tone control made us skeptical as to how well it would cover the ground between single coils and humbuckers, but it convinced us that it isn't necessary. If you want to spice up your tone, or just need to wake up a sleepy amp, this will do it. Boy... we sure do miss Guyatone.
The v.2 version supersedes the original board, which used the MV-57B chip for the bypass. This new board uses the Coda bypass scheme. The preprogrammed PIC chip is available here; http://www.deadendfx.com/product/coda-bypass-pic
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 113 rows
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ocr read from an image · sch paired from the schematic · fixed corrected by hand. Check marked values against the build document.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 54 | ||||
| R20 | 47ksch | 47k | ||
| R21 | 22ksch | 22k | ||
| R22 | 100ksch | 100k | ||
| R23 | 10ksch | 10k | ||
| R24 | 470rsch | 470 | ||
| R25 | 2k2sch | 2.2k | ||
| R26 | 470rsch | 470 | ||
| R27 | 1msch | 1M | ||
| R28 | 10ksch | 10k | ||
| R29 | 10ksch | 10k | ||
| R30 | 100ksch | 100k | ||
| R31 | 10ksch | 10k | ||
| R32 | 10ksch | 10k | ||
| R33 | 220ksch | 220k | ||
| R34 | 47ksch | 47k | ||
| R41 | 10ksch | 10k | ||
| R42 | 10ksch | 10k | ||
| R43 | 1msch | 1M | ||
| R44 | 100ksch | 100k | ||
| R45 | 470ksch | 470k | ||
| R46 | 1msch | 1M | ||
| R47 | 15ksch | 15k | ||
| R48 | 47ksch | 47k | ||
| R49 | 3k6sch | 3.6k | ||
| R50 | 100ksch | 100k | ||
| R51 | 10ksch | 10k | ||
| R52 | 1ksch | 1k | ||
| R53 | 100ksch | 100k | ||
| R1 | 10ksch | 10k | ||
| R2 | 1ksch | 1k | ||
| R3 | 10ksch | 10k | ||
| R7 | 1msch | 1M | ||
| R8 | 10ksch | 10k | ||
| R9 | 47ksch | 47k | ||
| R10 | 10ksch | 10k | ||
| R11 | 47ksch | 47k | ||
| R12 | 2k7sch | 2.7k | ||
| R13 | 10ksch | 10k | ||
| R14 | 1ksch | 1k | ||
| R15 | 10ksch | 10k | ||
| R16 | 47ksch | 47k | ||
| R17 | 100ksch | 100k | ||
| R18 | 4k7sch | 4.7k | ||
| R19 | 10ksch | 10k | ||
| R35 | 10ksch | 10k | ||
| R36 | 47ksch | 47k | ||
| R37 | 100ksch | 100k | ||
| R38 | 62rsch | 62 | ||
| R39 | 10ksch | 10k | ||
| R40 | 10ksch | 10k | ||
| R56 | 1ksch | 1k | ||
| R57 | 1k5sch | 1.5k | ||
| R58 | 10ksch | 10k | ||
| R59 | 10ksch | 10k | ||
| Capacitors 31 | ||||
| C13 | 3u3sch | 3.3u | ||
| C14 | 1usch | 1u | ||
| C22 | 1usch | 1u | ||
| C23 | 1usch | 1u | ||
| C24 | 33nsch | 33n | ||
| C25 | 15nsch | 15n | ||
| C26 | 1usch | 1u | ||
| C27 | 18nsch | 18n | ||
| C28 | 47nsch | 47n | ||
| C29 | 1usch | 1u | ||
| C30 | 1usch | 1u | ||
| C1 | 22nsch | 22n | ||
| C2 | 100usch | 100u | ||
| C3 | 47usch | 47u | ||
| C4 | 100nsch | 100n | ||
| C5 | 100nsch | 100n | ||
| C6 | 10usch | 10u | ||
| C8 | 22nsch | 22n | ||
| C9 | 1usch | 1u | ||
| C10 | 22nsch | 22n | ||
| C11 | 47nsch | 47n | ||
| C12 | 220nsch | 220n | ||
| C15 | 22nsch | 22n | ||
| C16 | 22nsch | 22n | ||
| C17 | 2n2sch | 2.2n | ||
| C18 | 1usch | 1u | ||
| C19 | 1n5sch | 1.5n | ||
| C20 | 1usch | 1u | ||
| C21 | 2n7sch | 2.7n | ||
| C31 | 100psch | 100p | ||
| C32 | 100psch | 100p | ||
| Diodes 11 | ||||
| D5 | 1n4148sch | 1N4148 | ||
| D7 | 1n4148sch | 1N4148 | ||
| D8 | 1n4148sch | 1N4148 | ||
| D10 | 1n4148sch | 1N4148 | ||
| D11 | 1n4148sch | 1N4148 | ||
| D12 | 1n4148sch | 1N4148 | ||
| D13 | 1n4148sch | 1N4148 | ||
| D1 | 1n4148sch | 1N4148 | ||
| D2 | 1n4001sch | 1N4001 | ||
| D6 | 1n4148sch | 1N4148 | ||
| D14 | 1N4148ocr | 1N4148 | ||
| Transistors 4 | ||||
| Q1 | BC549Bocr | BC549B | ||
| Q2 | 2N5089ocr | 2N5089 | ||
| Q3 | BC549Bocr | BC549B | ||
| Q4 | BC549Bocr | BC549B | ||
| ICs 5 | ||||
| IC11 | TLP222Gocr | TLP222G | ||
| IC3 | 4558ocr | 4558 | ||
| IC4 | 4558ocr | 4558 | ||
| IC5 | 4558ocr | 4558 | ||
| IC6 | CA3080ocr | CA3080 | ||
| Potentiometers 4 | ||||
| Output | B50Ksch | B50k | Potentiometer | |
| Release | B1Msch | B1M | Potentiometer | |
| Dynamics | B100Ksch | B100k | Potentiometer | |
| RAR | A7Kocr | A7k | Potentiometer | |
| Trimmers 3 | ||||
| TRIM1 | 100ksch | 100k | ||
| TRIM2 | 100ksch | 100k | ||
| TRIM3 | 2k2sch | 2.2k | ||
| Switches 1 | ||||
| Momentary | SPSTocr | SPST | ||
Other boards based on the Guyatone PS-025 Touch Overdrive
- Guyatone PS-025 Touch Overdrive Dirtbox Layouts