Schaller Treble-Bass Boost

Schaller Treble Bass Boost a232ddc97f35

Not much info on this but, it’s a rare West German Schaller vintage “Treble-Bass Boost” from 1968. It typically goes for over $400usd, so fairly desirable. It’s a 2 transistor based booster, with a five position switch that controls the the frequencies being boosted. There’s 2 treble settings, 2 bass settings, and 1 mids setting. … 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

Frequency Central Promiscuous Girlfriend

Promiscuous Girlfriend 8072fe1906e9

Another tube booster/overdrive created by frequency central over at FSB, schematic. What does it do? Well it does clean boost with the Gain set at minimum, flick on the Dirt switch and you get some nice diode clipping too. Turn up the Gain and you’e into overdrive territory with diode clipping, flick the Dirt switch … Read more

Durham Sex Drive

Durham Sex Drive 2af4fff9c551

Original info: “I designed the SEX DRIVE pedal to fulfill the very particular needs of good friend Charlie Sexton.  The goal was to build a “clean-boost” pedal that would supply additional bottom end and sustain when needed. The pedal would have to provide a boost that would not alter the original quality of the amplifiers … Read more