Sunn
SUNN: Sunn Buzz SB-1G
The Sunn Buzz is an odd little fuzz from the mid-to-late sixties. It’s silicon and runs on a single AA battery (1.5v) with a topology vaguely similar to the Fuzztone. The design was fairly questionable – the fuzz box had to be plugged into the amp input jack, which would have been fairly limiting. … Read more
EAE: Model feT Preamp
I saw that DirtBox Layouts has done a layout for this from the schematic on PedalPCB – it’s one that I’ve been wondering about for a while after playing with the CODA FX Black Hole Doom Machine. I had an idea of what was happening, but I was slightly off in some parts around the transistors replicating the power … Read more
Electronic Audio Experiments Model Fet
I suppose it is time to release the beast… Scbematic is avaiable HERE.
SUNN: Model T Preamp
Last time I did a Sunn Model T layout it was a super blood moon (Coda Doom machine) – today is the winter solstice, so I thought why not stick with the theme and do another Sunn layout. This time it’s the Guitar PCB version, which is pretty similar to the Sunn Model T amp … Read more
CODA FX: Black Hole Doom Machine
Could there be a better time than a super blood moon to post the Coda FX Black Hole Doom Machine? Yes, the super blood moon is a real thing, and it’s happening in my part of the world at the time of this post. Ominous astronomical omens aside – this is a JFET version of … Read more
Sunn Beta Pre Amp
Ok, let’s release the beast. Two layouts. One stock for iether Bass or Lead cap values. And another one with a Beta/Lead switch. Since I’m not a big fan of offboard wiring I decidied to simplify things a bit. Lead cap values is always in circuit and with a 4PDT switch you can switch in … Read more
Coda Effects Black Hole – Sunn Model T Amp Emulator
Verified by MTK. Thanks! And here is his demo: .
Sunn 200S Preamp
Here’s a simple bass preamp circuit derived from the Sunn 200S using JFETs. It’s pretty similar to the Bassman Preamp, but with the EQ section at the end of the circuit instead of the middle. Original S200S amps didn’t have the Mid control, but it’s kind of necessary IMHO. Bias the JFETs to 4.5v and … Read more