125B · 6 knobs
Black Hole
Based on the Sunn Model T· 2 other boards clone it
- Category
- Preamp / Amp-in-a-box
- Price
- €9.00in stock
From the vendor
Detailled build document available.
This is the infamous Sunn Model T preamp in a box, with a boost to make it even louder and heavier.
Seven controls:
• Normal and Bright channels : each have a different voicing and gain, you can use both at the same time or one by one
• Volume: plenty on tap
• 3 band EQ: bass (lots of them), mids and treble to sculpt your sound.
• Boost switch: activates a LPB1 boost to have more gain and go to doom territory
Genuine through-hole JFETs are more and more difficult to find these days (most of the through-hole JFETs sold online are fakes), so you can order a presoldered board with genuine Fairchild Semiconductors J201 SMD JFETs that are the best in cla
Schematic
The schematic is in the vendor's build document. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 35 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 10 | ||||
| R1 | 68k | 68k | ||
| R2 | 1M | 1M | ||
| R3 | 68k | 68k | ||
| R4 | 1M | 1M | ||
| R5 | 680R | 680 | ||
| R6 | 470k | 470k | ||
| R7 | 470k | 470k | ||
| R8 | 820R | 820 | ||
| R9 | 100k | 100k | ||
| R10 | 56k | 56k | ||
| Capacitors 10 | ||||
| C1 | 22nF | 22n | ||
| C2 | 22nF | 22n | ||
| C3 | 470pF | 470p | ||
| C4 | 220pF | 220p | ||
| C5 | 22uF | 22u | ||
| C6 | 22nF | 22n | ||
| C7 | 22nF | 22n | ||
| C8 | 270pF | 270p | ||
| C9 | 47uF | 47u | ||
| C13 | 220uF | 220u | ||
| Transistors 5 | ||||
| Q5 | J201** | J201 | ||
| Q6 | J201** | J201 | ||
| Q7 | J201** | J201 | ||
| Q8 | J201** | J201 | ||
| Q9 | 2n5088 | 2N5088 | ||
| Opto 1 | ||||
| LDR | 10K | 10k | Potentiometer | |
| Potentiometers 7 | ||||
| NormalG | 1MA | A1M | Potentiometer | |
| BrightG | 1MA | A1M | Potentiometer | |
| VOLUME | 100KA | A100k | Potentiometer | |
| BASS | 1MB | B1M | Potentiometer | |
| MIDS | 25KB | B25k | Potentiometer | |
| TREBLE | 250KB | B250k | Potentiometer | |
| BOOST | 100K | 100k | Potentiometer | |
| LEDs 1 | ||||
| D1 | LED | LED | ||
| Jacks & sockets 1 | ||||
| J201 | (surface | (SURFACE | ||
Other boards based on the Sunn Model T
- Model T - Sunn PreAmp Fuzz Dog · 1590BB · £52.80
- Model T Mini - Sunn PreAmp Fuzz Dog · 1590B · £50.40