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Zapco ST-4XP SQ III
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ST-4XP SQ III

Class AB, 4-Ch — Power 2Ω: 4 x 250W, 4Ω: 4 x 150W

$599.99MSRP · USD

The ST-4XP SQ III is a high-power 4-channel Class AB amplifier in Zapco's Studio-X III SQ Series, delivering 150 W per channel into 4 Ω with audiophile-grade components.

Key Features

  • 4-Channel, Class-AB Sound Quality amplifier
  • New high-efficiency finned chassis with temperature-controlled fans
  • Proprietary audiophile-grade RCA connectors
  • Variable Full / LP / HP electronic crossover
  • Remote dash control included

Power Output

4 Ω Stereo4 × 150 W
2 Ω Stereo4 × 250 W
4 Ω Bridged2 × 500 W

Performance

Amplifier ClassAB
Channels4
Signal-to-Noise> 95 dB
THD at Rated Power< 0.05%
Frequency Response15 Hz – 30 kHz
Tested Voltage14.4 V

Connections & Controls

InputsRCA low-level
Gain200 mV – 5 V+ input sensitivity

Product Details

BrandZapco
SeriesST-X
ModelST-4XP SQ III
SKUST-4XPSQIII
EAN8033373005541
Inquire to Order More ST-X

Genuine product · Authorized U.S. dealer · Drop-shipped direct

Documentation

Product Page at ZapcoOwner's Manual (PDF)