Ground Zero GZUA 2.250SQ-PLUS Two Channel

Ground Zero GZUA 2.250SQ-PLUS Two Channel

Sound Express is an authorized dealer for Ground Zero.


The GZAU plus series of amplifier offered by Ground Zero have been rated among the finest in the world, no joke. Rated by hifitest, car & hifi, and several other well known organizations as one of the top 5 reference amplifiers ever built (photos above of a review on the 6 channel version). The plus series gives you the ability to set the bias of the amplifier (it lets you set the amplifier to run in class a/b or class a for better sound quality). The casing has been cut from a block of aluminum and polished as well as anodized to give it a copper color look. The amplifier features a variable crossover with plenty of options to let you run component speakers active without the use of a passive crossover. Given the amplifiers overbuilt, robust power supply and efficient heat-sink, you can even run each channel down to 1 ohm or bridge both channels down to 2 ohm.


  • 2-channel SQ amplifier
  • Variable BIAS setting
  • Class AB technology
  • Variable active crossover with bypass function
  • 2 ohms stable in bridged mode
  • Stable power supply
  • Gold-plated connectors
  • Flat heatsink with engraved Ground Zero lettering
  • Bass remote control included
  • Suitable for high quality SQ setups






Output Power (@ 4Ω)

2x 180 Watts RMS

Output Power (@ 2Ω)

2x 320 Watts RMS

Output Power (@ 1Ω)

2x 500 Watts RMS

max. Output Power (CEA-2006A / 10%THD+N)

1200 Watts

Frequency Response

10 Hz – 30 kHz


● / ● / ●

Bass Boost / Phasenregelung

● / ●

Remote Control

BIAS Setting


Dimensions (b x l x h)

209 x 360 x 46 mm



    Amplifier Type

    Sound Express USA

    The Sound Experts

    Color logo - no background.png

    Contact >>