Hello, I'm discussing here with some people about a pedal that emulate the sound of the EH-150 Gbson amp. We are found this pedal, too: https://combsguitars.com/jj150 «JJ-150 is a FET-based version of the actual EH-150 preamp circuit (the later 6SQ7 version) with a tweak or two».
Reading the description this pedal should be a real imitation of the EH-150 preamp schematic but with jfet, and some tweak. While the Nocturne Jr. Backyard has just one transistor, so it can't be the jfet version of the EH-150 preamp.
I tried it on the breadboard. Tone pot didn't work how I expected, maybe I got a mistake, so I have to check it up.
But it sounds crunchy and crispy, not a super musical distortion, and it's difficult makes it sound clean even at low gain setting, where it's became kinda dark.
Jfet transistors were 2N5457.