GZCS A-1.650D Amplifier – High Performance Class D Mono Amplifier (1 Channel)

The GZCS A-1.650D is a high-performance Class D mono amplifier designed for subwoofers . Equipped with an integrated active crossover , bass boost and phase control , it delivers up to 750 Watts of maximum power with a frequency response of 10–250 Hz . Its compact and efficient construction with heat sink and high-level inputs with auto-on function make installation and use very convenient.

Technical Specifications :

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  Model : Class D Mono Amplifier


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  Channels : 1 (Mono)


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  Output Power (4Ω) : 250 Watts RMS


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  Output Power (2Ω) : 450 Watts RMS


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  Output Power (1Ω) : 650 Watts RMS


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  Max Output Power (CEA-2006A / 10% THD+N) : 750 Watts


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  Frequency Response : 10 – 250 Hz


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  Subsonic / LPF / BPF : ● / ● / ●


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  Bass Boost Control : ●


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  Phase Switch : ●


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  High Level Input / Auto-on Function : ● / ●


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  Remote Control : Optional


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  BIAS Setting : ○


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  Linkmode : ○


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  Dimensions (W x D x H) : 185 x 152 x 47 mm / 7.28″ x 5.98″ x 1.85″

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  Class D technology for maximum efficiency and lower heat dissipation.


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  Active crossover to optimize the subwoofer's frequency range.


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  Bass and phase control for personalized sound adjustments.


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  Compact heatsink with engraved Ground Zero logo, ensuring better thermal performance.


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  High level input with auto-on function for easy installation.


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  Remote bass control available (optional).

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  Maximum power of 750 Watts , ideal for high-performance subwoofers.


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  Frequency response of 10 – 250 Hz , perfect for capturing the low frequencies of a sound system.


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  High efficiency Class D , resulting in lower energy consumption and better thermal performance.


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  Compact and robust , with a space-saving design and excellent performance.