Barcus-Berry 3000A

Barcus Berry 3000A 54db25be93f7

Stumbled across this schematic on FSB. It’s a buffer/EQ/preamp for peizo pickups, specifically all Barcus-Berry electret microphone systems. I figured most would be building this into an instrument and not a pedal, so all the pots are off-board. If you’re planning on running it only off a 9v battery, you cab get away without the … Read more

LEHLE Sunday Driver

LEHLE Sunday Driver e92e9f5f21c2

From the Source: The Lehle Sunday Driver SW is a compact-format high-end preamp for all types of electrical and acoustic instruments – a preamp that enables electric guitars and basses, acoustic guitars, and also other stringed instruments (such as violins, cellos and double basses) to realize all of their musical potential. The switchable version expands … Read more

Earthquaker Devices Black Eye

Earthquaker Devices Black Eye e8713d09e059

From the source: This ll discrete, MOSFET based circuit provides nearly 30db of unadulterated clean gain boost with a minimum amount of tone coloration. Note that you can also use this as an attenuator by turning the Boost knob counterclockwise away from the noon position. It can also be used as a powerful buffer with … Read more