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              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″ 
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″ 
 
                         
    
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
    
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
   
    
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
    
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
   
    
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
 
      
    
      
      
        
      
      
        
        
          
        
        
