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    Zapco - Z-150.4 II - Class AB, 4-Ch Power 2Ω: 4 x 275W, 4Ω: 4 x 165W

    Zapco - Z-150.4 II - Class AB, 4-Ch Power 2Ω: 4 x 275W, 4Ω: 4 x 165W

    by Zapco
    Sold out
    $1,333.33 - $1,333.33
    $1,333.33
    $1,333.33 - $1,333.33
    $1,333.33

    The Zapco Z-150.4 II is a refined Class AB 4-channel amplifier designed for exceptional sound quality, reliability, and power delivery. With 275 watts RMS per channel at 2 ohms and 165 watts at 4 ohms, it provides the warmth and dynamic response that audiophiles demand. Ideal for front-stage or multi-way active systems, it features precision crossovers, solid construction, and Zapco’s renowned analog tonal accuracy — making it a premium choice for SQ competition and high-end installations alike.

    • Model: Z-150.4 II
    • Type: Class AB 4-Channel Full-Range Amplifier
    • Power Output (RMS):
     • 4 Ω Stereo: 4 × 165 W
     • 2 Ω Stereo: 4 × 275 W
     • 4 Ω Bridged: 2 × 550 W
    • Frequency Response: 10 Hz – 30 kHz (±1 dB)
    • Signal-to-Noise Ratio: > 100 dB
    • THD + N: < 0.05% at rated power
    • Damping Factor: > 200 @ 100 Hz
    • Input Sensitivity: 0.25 V – 8 V (variable)
    • Input Impedance: 20 kΩ (balanced) / 10 kΩ (unbalanced)
    • Crossover Network (per channel pair):
     • High-Pass Filter (HPF): 15 Hz – 4 kHz (12 dB/octave)
     • Low-Pass Filter (LPF): 30 Hz – 4 kHz (12 dB/octave)
     • Band-pass configuration available via filter combination
    • Bass Boost: 0 – 12 dB @ 45 Hz (adjustable)
    • Protection Circuits:
     • Thermal overload
      • Short circuit
      • DC offset
      • Over/under voltage
    • Cooling System: Heavy-duty extruded aluminum heatsink with variable-speed fan assist
    • Fuse Rating: 2 × 60 A
    • Power Supply: Fully regulated MOSFET PWM design
    • Dimensions: 17.3″ (L) × 8.5″ (W) × 2.5″ (H)
    • Weight: Approx. 12 lb (5.4 kg)
    • Included Accessories: Mounting hardware, user manual