Zapco ST-5X

Zapco ST-5X 5 Channel Class AB Amplifier

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Zapco ST-5X 5 Channel Class AB Amplifier

In stock
  • Low & High Level Input
  • 3/5 Channel Capable

Zapco ST-5X

5 Channel Class AB Amplifier

The Studio-X line of Amplifiers from Zapco was designed specifically for today’s car audio market. The ST-X amplifiers are the smaller lighter amps you need for today’s smaller lighter cars. But with the Zapco ST-X amps, smaller doesn’t mean weaker or softer. With the ST-S amps you get all the power and sound quality you expect from Zapco. The Studio-X compact chassis makes it an easy fit in any car and even in motorcycle fairings. The square, low profile chassis also means it will be easy to trim out for a great looking installation so your system will look as awesome as it sounds.

And speaking of sound…This is a Zapco amplifier and sound is what it’s all about. The Class A/B Zapco amplifiers for mids and highs havce the same high quality caps, 5532 op-amps,and bi-polar outputs that made the C2K and Reference series amps the industry standard for sound quality. For the bass, the ST-X mono Class D amps come in 5 power levels so whether you’re running a 1Ω, 2Ω, or 4Ω load, the ST-X bass amps are the right choice for the power for the right price, for your system, in your car.

Reliability? Zapco defines reliability. It’s not at all unusual to see Zapco amps moved from car to car and from generation to generation. Zapco Amps produced in the ’90 are still being traded and bought on the internet by sound quality fans world wide. The Studio-x will be no different. These amps are built to last.

  • 12dB HP/LP/Full Range Crossover
  • Speaker level input

Zapco Power

  • 5 Channel Full range class A/B
  • Power@2Ω:4x120watts+1×350 watts
  • RMS Rated Power @ < 0.05%THD
  • Power@4Ω:4x80watts+1×350 watts
  • Bridged@4Ω:2x240watts+1×350 watts


  • Class A/B bridgeable 12V amplifier
  • 5 channel bridgeable 12V amplifier
  • Stable into 4 ohms bridged or 2 ohms stereo load
  • STHD + Noise <0.05%
  • Signal to Noise Ration >85dB
  • Channel Separation >60dB
  • Frequency Response 15Hz to 30KHz +/ 1dB
  • Input Sensitivity .25volts to 5volts
  • RCA Signal input and output connectors
  • 4way protection circuitry
  • thermal / over current / speaker short / DC
  • Tested voltage & THD: 14.4V & less than 0.04%
  • Dimensions in Inches : 6.4(W) x 1.8(H) x 15.3(L)

Typical Application
Real Power : The ST-5X puts out over 60 Watts RMS in each of 4 main channels, All four channels driven at all frequencies, at rated distortion… and over 100 watts per channel at 2 ohms. In Dual Mono you will have over 200 watts x 2 And in all cases you’ll ger over 240 watts at 4 ohms for the bass. Again: Real power for the real world.

More Information
Product Name Zapco ST-5X 5 Channel Class AB Amplifier
Manufacturer Zapco
Manufacturer's Warranty 1 Year Manufacture's Warranty
Manufacture's Warranty 2 N/A
Manufacturer Sku ST-5X
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