Black Hole PCB

- Sunn Model T preamp -

Pre-soldered J201 SMD JFETs (+4€)
8 €
In stock



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 class.

Fake JFETs sound quite bad, so by ordering the presoldered board, you will be sure to have a good sounding guitar pedal.

High quality PCB:
  • Gold-plated pads
  • Double sided FR4-TG circuit boards
  • Spaced pads for easier soldering
2 Comment

This is actually my favourite build. The documentation is detailed and thorough and the drilling template is excellent too. And most important: it sounds amazing.
Pay attention to the measurements of the 220 uF electrolytic cap when you order/buy the parts. They tend to be pretty big.
There is a "part list by values" in the documentation. It omits Q9 2N5088. Just bear that in mind if you use it as a shopping list.
This is one of the coolest pedals I've built so far. Thanks.


Can I use a 2n5089 instead of 2n5088