Ground Zero GZPA 4SQ - 4-channel amplifier

4-channel high-end amplifier with integrated active crossover, BIAS control and high-quality components for demanding music lovers

Features

• High-end SQ amplifier
• Shielded dual high-performance power supplies
• Discretely constructed MOS-FET power amplifier section
• 1 Ohm stable stereo / 2 Ohm stable bridged
• Continuously adjustable BIAS setting
• Adjustable input sensitivity
• Encapsulated potentiometers
• High-pass and low-pass filters with a wide control range
• Crossover multiplier (x10)
• Wide frequency response for high-resolution playback (10 Hz – 50 kHz)
• Switch-on delay
• Switch-on and protection indicator
• Start-stop stability (9 -16 volts)
• Overheating, overvoltage and short circuit protection circuit
• Low distortion Burr-Brown OPA2134PA operational amplifier
• Ground Zero exclusive Mundorf Mcap capacitors
• Solid and highly efficient heat sink
• White illuminated, laser-engraved logo glass plate

Technical data

• Model: GZPA 4SQ
• Type: High-End SQ
• Output power at 4 ohms (CEA*): 4 x 125 W
• Output power at 2 ohms (CEA*): 4 x 225 W
• Output power at 1 ohm (CEA*): 4 x 350 W
• Bridge power at 4 ohms (CEA* / 10% THD): 2 x 450 W
• Bridge power at 2 ohms (CEA* / 10% THD): 2 x 700 W
• Lowpass: 20 – 400 Hz / 200 – 4000 Hz (switch)
• Highpass: 20 – 400 Hz / 200 – 4000 Hz (switch)
• Bandpass: Yes 
• Phaseshift: Yes 
• Variable bias setting: Yes 
• Lighting: Yes
• Dimensions: 22.2 x 6.05 x 42 cm
• Dimensions inches: 8.74“ x 2.38“ x 16.54“