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Product details

Advanced Specifications
  • Product type: Sound quality amplifier
  • Series: Uranium Series
  • Channels: 2
  • Amplifier class: Class AB
  • Output power @ 4Ξ©: 2 x 175W RMS
  • Output power @ 2Ξ©: 2 x 300W RMS
  • Output power @ 1Ξ©: 2 x 485W RMS
  • Bridged power @ 2Ξ©: 1000W RMS
  • Max power (CEA-2006A / 10% THD+N): 1180W
  • Frequency response: 10Hz – 70kHz
  • HPF: Yes
  • LPF: Yes
  • BPF: Yes
  • Bass boost: Yes
  • Phase shift: Yes
  • High-level input: No
  • Auto turn-on: No
  • Remote control: Yes
  • BIAS adjustment: Yes
  • Link mode: No
  • Remote turn-on: Soft delayed
  • Connectors: Gold-plated
  • Heatsink: Massive engraved heatsink
  • Dimensions: 209 x 360 x 48 mm
Key Features
  • Class AB architecture delivers the tonal refinement and control expected in serious SQ systems
  • Variable BIAS adjustment lets you tune amplifier behaviour toward a more Class A-like character
  • Wide-band frequency response supports high-resolution front stage and active system use
  • Integrated crossover flexibility makes it easier to configure precise speaker duties
  • Strong stereo and bridged output gives it real versatility across front stage or sub duties
Best Suited For
  • High-end front stage amplification in SQ-focused builds
  • Two-channel systems where amplifier character matters
  • Bridged applications needing strong, clean power delivery
  • Active or semi-active systems requiring onboard filter flexibility
  • Enthusiasts building around dedicated sound quality amplification rather than convenience-first designs
Why OSCA Backs This Product

This is the kind of amplifier that makes sense when you actually care how the system is being driven, not just how much power it makes. For a proper SQ build, the Class AB topology, BIAS control, and overall focus on refinement are exactly what make it appealing.

ground zero gzau 2 channel amplifier

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.

More Information

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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