The CB-1 Ultra Clean Booster and Harmonic Buffer unit.
With a dedicated tuner out, 10 Meg input and the 10DB boost of pure clean and clear power amp headroom. Without affecting your Tone!!
This was Designed for use with electric Lap-steels originally but work's incredibly well to clean up your signal and can definitely drive the front end of low powered tube amps into an articulate and creamy overdrive.