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    Zapco - ST-4B - Class AB, 4-Ch Power 2Ω: 4 x 90W, 4Ω: 4 x 65W

    Zapco - ST-4B - Class AB, 4-Ch Power 2Ω: 4 x 90W, 4Ω: 4 x 65W

    by Zapco
    Sold out
    $222.22 - $222.22
    $222.22
    $222.22 - $222.22
    $222.22

    • Model: ST-4B
    • Channels: 4 (full-range, Class AB)
    • Power Output:
     • 90 W × 4 @ 2 Ω
     • 65 W × 4 @ 4 Ω
     • Bridged: 180 W × 2 @ 4 Ω
    • Total Harmonic Distortion (THD): < 0.1% at rated power
    • Signal-to-Noise Ratio: > 100 dB
    • Frequency Response: 20 Hz – 50,000 Hz
    • Input Sensitivity: 0.2 V – 6 V (adjustable)
    • Protection Features: Over-current, over-temperature, DC offset, short circuit
    • Construction: Compact, thermally efficient design with integrated heatsinks
    • Dimensions: Approx. 160 × 115 × 45 mm
    • Use Case: Ideal for driving multiple speakers or as a mid/high channel in multi-amp systems