The Freq Boost is patterned after a rare Treble Booster of the mid-'60s that gave many famous players the ability to add sustain, fatten and overdrive their favorite guitar amplifier.

Robust build quality and rugged engineering ensure that the Freq Boost will stand up to the abuse of life on the road. Other features include hardwire bypass, LED operation indicator, non-slip rubber bottom, easy-access 9v battery compartment and included external power supply.