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Zapco ST-B Series

The ST-B Series. Great sound for every day use

Zapco has a reputation for sound reproduction and quality that is unsurpassed. It is our dedication to sonic purity and our passion for performance that built Zapco's reputation. With all the new amps coming into the market, not one has been any threat to Zapco's standing as the premium amp and processor line. Just check the audio competition scene and the audio forums. The pros know what to use to win. But not everyone wants to compete. The question was this: 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 ST-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.

While sound quality is always the number one factor in a Zapco design, there are other factors in the Studio design that make them "every-day" amps. The extruded aluminum chassis is more compact and lighter to make the studio series an easier fit in today's smaller cars. The feature set of the Studio amps provides you with all the system versatility you need without adding additional components, with everything from crossovers to preamp outputs, so multiple amps don't require extra signal cables. Power, price, size, and performance. No it's not designed specifically for competition. This is an amp designed to knock your socks of... in your car, for your daily use, every day. So go ahead... pop in your favorite disk, grab the volume control, and see if you don't agree that dedication to sonic purity is definitely a good thing.


ST-2B  2-Ch. Full Range Class-AB Amplifier

  • Power @ 4Ω: 2 x 65 watts

  • Power @ 2Ω: 2 x 95 watts

  • Power @ 4Ω Bridged: 1 x 180 watts

  • THD @ Rated Power  < 0.1%

  • Signal to Noise Ratio > 97dB

  • Frequency Response 20Hz to 20,000Hz ±1dB

  • Dimensions (mm): 182(W) x 52(H) x 200(L)

139.99 $


ST-4B  4-Ch. Full Range Class-AB Amplifier

  • Power @ 4Ω: 4 x 65 watts

  • Power @ 2Ω: 4 x 95 watts

  • Power @ 4Ω Bridged: 2 x 180 watts

  • THD @ Rated Power  < 0.1%

  • Signal to Noise Ratio > 97dB

  • Frequency Response 20Hz to 20,000Hz ±1dB

  • Dimensions (mm):  160(W) x 52(H) x 282(L) 

199.99 $


ST-1B  Mono Class-AB Amplifier

  • Power @ 4Ω: 200 watts

  • Power @ 2Ω: 300 watts

  • THD @ Rated Power  < 0.1%

  • Signal to Noise Ratio > 97dB

  • Dimensions (mm):   182(W) x 52(H) x 280(L)  

199.99 $

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