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Zapco ST-1B Sub Amp Mono 1 Channel Class AB Subwoofer Amplifier 200w RMS

Zapco ST-1B Sub Amp Mono 1 Channel Class AB Subwoofer Amplifier 200w RMS - Main image
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$89.25 $119 In stock

Category: Amplifier

ST-1B

Mono Class AB Amplifier

Mono Class-AB Amplifier, MOSFET power supply, Power @ 4Ω: 200 watts 

  • RCA input and output
  • Variable Inputs Gain Control
  • Variable LP Electronic Crossover
  • Variable Bass Boost
  • Phase 0-180°
  • Subsonic filter
  • Power @ 4Ω: 200 watts
  • Power @ 2Ω: 300 watts
  • THD @ Rated Power < 0.2%
  • Signal to Noise Ratio > 90dB
  • Input Sensitivity .25v to 5v
  • Net Dimensions (mm): 182(W) x 52(H) x 280(L)
  • Overall Dimensions (mm): 182(W) x 52(H) x 310(L)
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Customer Reviews (5.0 / 5 · 5 reviews)

Madison F. ★★★★★

The MOSFET power supply really holds up—I’ve had it running a single 10” sub for a few weeks now and the 200 watts at 4 ohms feels punchy without any sag. The variable LP crossover made dialing in the low end a breeze.

Grace O. ★★★★★

Installed this in my truck to power a single 10-inch sub, and the MOSFET power supply gives it clean, reliable punch without any noise. The variable LP crossover made tuning a breeze. Came in a compact box that fit perfectly under the seat, and the 200 watts at 4 ohms is plenty for solid bass witho

Harper ★★★★★

The crossover knob is genuinely useful for dialing in the sub without needing extra gear, and the RCA passthrough makes wiring a second amp a breeze. It's been running warm but stable in my trunk for a month now, and the bass stays punchy at moderate volume.

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