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Hey all, my professor and long time tone circuit Guru has sent me on a search to find a pedal kit that uses 4 FET transistors to build for class. Is there anything that fits the bill either on BYOC or elsewhere? All I can find is the Tetra Fet pedal that's pre-built.

Please let me know, thanks!

-Sonicgogo

The BYOC Classic Phaser kit uses four JFETs: https://buildyourownclone.com/products/ ... phaser-kit

_________________
“My favorite programming language is SOLDER” - Bob Pease (RIP)

My Website * My Musical Gear * My DIY Pedals: Pg.1 - Pg.2

Not that I'm aware of. But you could design your own pretty easily. Maybe look at the Big Muff Pi for inspiration. It is a 4 BJT pedal. It's nothing more than 3 boosts cascaded, then a tone stack, and then a 4th boost as volume recovery. The "sustain" or "distortion" knob is nothing more than a voltage divide volume control stuck between the first and second boosts. There is diode clipping in the negative feedback loops of the 2nd and 3rd stages, but that isn't necessary to create distortion.

So you could design something like this:

input > FET boost > volume control a.k.a. "gain" > FET boost > FET boost > any sort of passive tone control > FET Boost > actual volume control > output

_________________
*patience is a virtue*

Please do not PM me. email is prefered. keith@buildyourownclone.com

Oh yeah. Duh.

_________________
*patience is a virtue*

Please do not PM me. email is prefered. keith@buildyourownclone.com

I should've mentioned I'm looking for a dirt box or preamp the uses FETs, sorry I neglected to include that. We only have a couple weeks for the project which is why I was hoping for an existing kit. Maybe I can see about designing one and using turret board for a rough attempt.

Thanks all!

https://runoffgroove.com/articles.html

Check out here. They have a lot of projects where they basically 1-to-1 recreate famous amplifier preamp sections with FETs instead of tubes. And most of the projects have vero board layouts. A lot easier that turret board.

_________________
*patience is a virtue*

Please do not PM me. email is prefered. keith@buildyourownclone.com

I'll check it out! Unfortunately most of the recreations are of circuits that don't have a 4 FET preamp, and I don't know where to look besides going through every single design one-by-one looking for 4 FETs lol

Thanks for the resource!

Pretty sure the Blue Overdrive has five JFETs. That's like 25% extra credit.

https://buildyourownclone.com/products/ ... rdrive-kit

True, but it also uses a dual op amp and I get the impression that our OP is looking for an circuit that uses only FETs for the overdriven effect.

_________________
“My favorite programming language is SOLDER” - Bob Pease (RIP)

My Website * My Musical Gear * My DIY Pedals: Pg.1 - Pg.2