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Product details

Advanced Specifications
  • Product type: Sound quality amplifier
  • Series: Uranium Series
  • Channels: 6
  • Amplifier class: Class AB
  • Output power @ 4Ξ©: 4 x 110W + 2 x 160W RMS
  • Output power @ 2Ξ©: 4 x 175W + 2 x 280W RMS
  • Max power (CEA-2006A / 10% THD+N): 2 x 425W + 650W
  • Bridged power @ 4Ξ© (CH1-4): 2 x 340W RMS
  • Frequency response: 10Hz – 70kHz
  • HPF: Yes
  • LPF: Yes
  • BPF: Yes
  • Bass boost: No
  • Phase shift: No
  • High-level input: No
  • Auto turn-on: No
  • Remote control: No
  • BIAS adjustment: Yes
  • Link mode: No
  • Connectors: Gold-plated
  • Heatsink: Massive engraved heatsink
  • Dimensions: 209 x 550 x 48 mm
Key Features
  • Six-channel Class AB design makes it ideal for serious active front stage system layouts
  • Variable BIAS adjustment lets you tune amplifier behaviour toward a more refined operating character
  • Wide frequency response supports high-resolution playback and full-range system use
  • Integrated active crossover control adds valuable flexibility in advanced installs
  • Combines multi-channel efficiency with the tonal qualities SQ-focused systems are built around
Best Suited For
  • Active 3-way front stage systems
  • High-end SQ builds wanting fewer separate amplifiers
  • Complex front stage layouts with dedicated tweeter, midrange, and midbass channels
  • Installations where tonal refinement matters more than convenience-first amplifier design
  • Users wanting a cleaner multi-channel amplifier solution without stepping away from Class AB sound quality
Why OSCA Backs This Product

This is the kind of amplifier that makes a lot of sense in serious front stage builds. It gives you the channel count to do more in one chassis, without giving up the Class AB character and control that make SQ amplifiers worth chasing in the first place.

Built for Advanced Front Stage Systems

The GZUA 6SQ is built for systems that demand more from a single amplifier. With six channels of Class AB power, variable BIAS control, and the flexibility needed for serious active setups, it gives high-end builds the channel count and refinement they need without resorting to a stack of separate amplifiers.

For the right system, this is a smarter way to build. More control, more flexibility, and the kind of tonal quality that makes a serious SQ front stage worth the effort.

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About Ground Zero πŸš€

Ground Zero, established in 1995, is a German-engineered car audio brand with strong American performance roots, known for delivering high-output, competition-proven equipment built on real engineering, not hype. With distribution in over 80 countries and a full range of system components developed in Germany, the brand has earned global respect through consistent results in independent testing and demanding installs. From its origins in high-excursion subwoofer design to its evolution into a complete system solution, Ground Zero remains a go-to for enthusiasts and installers who value output, reliability, and proven performance.

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