Ground Zero GZUA 4SQ Amplifier

Ground Zero Audio 4-channel Sound Quality Amplifier

Description

The GZUA SQ series from Ground Zero’s elite Uranium lineup sets a new benchmark in amplifier performance for true sound quality purists. Available in 2-channel, 4-channel, and 6-channel configurations, these Class A/B amplifiers are engineered for stunning audio transparency, low distortion, and complete tonal control.

Featuring high-end WIMA® capacitors, OPA2134 op-amps, a bias-adjustable topology (from A/B to near-Class A), and wide-range high-/low-pass filters with bandpass capability, the GZUA SQ delivers breathtaking detail and musicality across the full frequency range—from a deep 10 Hz to 70 kHz.

Whether you're running a high-resolution 3-way front stage or bridging for clean subwoofer power, the GZUA SQ series offers incredible versatility, soundstage depth, and dynamic finesse. With 110 dB SNR, THD below 0.005%, and damping factors over 800, these amps are built to reveal the soul of your music—no matter the genre.

🔧 Available models:

GZUA 2SQ – 2x 175W @ 4Ω / 2x 485W @ 1Ω

GZUA 4SQ – 4x 115W @ 4Ω / 4x 185W @ 2Ω

GZUA 6SQ – 4x 110W + 2x 160W @ 4Ω

Specifications / Information:

• 4-channel SQ amplifier

• Variable BIAS setting

• Class AB technology

• Active crossover with bypass function

• Soft delayed remote turn-on

• Gold-plated connectors

• Massive heatsink with engraved Ground Zero lettering

• Suitable for high quality SQ setups

• Adjustable input sensitivity

• Output Power (@ 4Ω): 4x 115 Watts RMS

• Output Power (@ 2Ω): 4x 185 Watts RMS

• max. Output Power (CEA-2006A / 10%THD+N): 2x 440 Watts

• Ouput power (@ 4Ω) bridged: 2x 350 Watts RMS

• Frequency Response: 10 Hz – 70 kHz

• HPF / LPF / BPF

• BIAS Setting

• Linkmode

• Dimensions (w x l x h): 209 x 360 x 48 mm / 8.23 x 14.17 x 1.89″