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Zapco ST-5B Amp 5 Channel Class AB Full Range Amplifier 4x70w + 1x250 RMS

Zapco ST-5B Amp 5 Channel Class AB Full Range Amplifier 4x70w + 1x250 RMS - Main image
$117.18 $189 In stock

Category: Amplifier

ST-5B

5-Ch. Class AB Amplifier

5-Channel, Class-AB Full Range Amplifier, Stable into 4 ohms bridged or 2 ohms stereo load

  • MOSFET power supply
  • RCA and OEM speaker level input
  • Variable Inputs Gain Control
  • Variable FULL / LP / HP Electronic Crossover
  • Variable Bass Boost
  • Power @ 4Ω: 4 x 70 + 1 x 250 watts
  • Power @ 2Ω: 4 x 100 + 1 x 400 watts
  • Power @ 4Ω Bridged: 2 x 180 + 1 x 400 (2Ω)
  • THD @ Rated Power < 0.2%
  • Signal to Noise Ratio > 90dB
  • Channel separation > 45dB
  • Frequency Response 10Hz to 20KHz ±1dB
  • Input Sensitivity .25v to 5v
  • Net Dimensions (mm): 182(W) x 52(H) x 351(L)
  • Overall Dimensions (mm): 182(W) x 52(H) x 381(L)
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Customer Reviews (5.0 / 5 · 5 reviews)

Joseph ★★★★★

The MOSFET power supply gives this amp a clean, stable output even when I push it hard. I was surprised how well it handles my aftermarket door speakers and a small sub without breaking a sweat.

Penelope N. ★★★★★

The OEM speaker level inputs made hooking this up to my factory head unit painless, no line converter needed. It's a solid chunk of Class AB power that runs clean, and the 2 ohm stereo stability gives me room to upgrade my sub later.

Amelia ★★★★★

Wired this in to replace an old 4-channel and the difference in my front stage is night and day. The OEM speaker level input saved me from running new RCAs, which was a huge relief in a car with a factory head unit. Dead quiet too, no hiss at idle.