ST-B Series Amplifiers
Class A/B Full Range Amplifiers

Could Zapco put it’s 40-years of audio experience to work to develop an amp for every-day use? An amp that all can afford but that will stay true to the Zapco heritage for sound and reliability?
Absolutely! We can and we have! The new Studio-B amps are a testament to the fact that you can build a quality product with great sound in an amplifier for every-day use. With the Studio-B amplifiers Zapco brings the sound quality and reliability that built the Zapco legend to an amplifier that everyone can afford. The Studio-B are Class A/B full range amps and have hi-lev.inputs, variable LP/HP/Full electronic crossover, and variable bass boost.