Thermionic Effects manufactures boutique high gain vacuum tube guitar and bass guitar preamplifiers. Handcrafted by a musician for musicians that demand uncompromised tone, quality and durability.

Overdrive Pedal
Features: Dual-gain stages, Rugged die-cast polished aluminum enclosure, true mechanical bypass switching, Handwired point to point circuitry, Grounded power cable, In-line fuse and power switch, (High quality Instrument cables sold separately.)

Audio Samples. Photos. Pricing. Ordering. Email: thermionic_effects@hotmail.com