GZPA 4SQ Amplifier - 4 Channels High Performance (SQ)

The Ground Zero GZPA 4SQ is a high-performance 4-channel amplifier designed for demanding audiophiles. Equipped with MOSFET technology and high-quality components, this amplifier delivers an impressive power of up to 350 Watts RMS per channel into 1Ω . It includes an adjustable active crossover with bypass function and BIAS control to ensure total sound customization. Its efficient heat sink, together with the illuminated "Ground Zero" inscription, ensures stable performance and attractive visuals.

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General Specifications :

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  Model : 4-Channel High Performance SQ Amplifier


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  Channels : 4


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  Output Power (@ 4Ω) : 4x 125 Watts RMS


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  Output Power (@ 2Ω) : 4x 225 Watts RMS


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  Output Power (@ 1Ω) : 4x 350 Watts RMS


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  Max Power (CEA-2006A / 10% THD+N) : 2x 840 Watts


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  Frequency Response : 10 Hz – 50 kHz


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  Crossovers (HPF/LPF/BPF) : Yes/Yes/Yes


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  Bass Boost / Phase Switch : Yes / No


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  High Level Inputs / Auto-on : Yes / Yes


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  Remote Control : Yes


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  Link Mode : No


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  Dimensions (W x D x H) : 222 x 420 x 60.5 mm / 8.74 x 16.54 x 2.38″

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Additional Features :

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  MOSFET Technology : For powerful, high-quality sound.


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  Variable Active Crossover with Bypass Function : Total sound customization, adjusting frequencies as needed.


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  High Quality Components : Ensure faithful and accurate audio reproduction.


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  Efficient Heat Sink : Keeps the amplifier at an ideal temperature for consistent performance.


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  Ground Zero Inscription Lighting : Adds a sophisticated visual touch to your audio system.


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  10 Hz to 50 kHz Frequency Response : Ideal for high-resolution listening and exceptional clarity.

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Highlights :

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  350 Watts RMS per Channel (1Ω) : Power for big, clear sound across multiple channels.


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  High-Resolution Audio : Perfect for those who demand superior quality.


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  Active Crossover with Bypass : Total flexibility to configure the audio system according to your preferences.