GROUND ZERO GZPA Reference 4PURE-SQ

4-channel power amplifier with 1700 watts RMS power

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Specifications:

High end Pure amplifier

1 Ohm stable stereo / 2 Ohm bridged

Symmetrical dual 2-channel direct signal structure

Shielded and isolated dual power supply

Infinitely variable bias setting class AB -> almost class A

Adjustable input sensitivity

switch-on delay

Power on and protection indicator

Overheat, overvoltage and short circuit protection

Temperature-dependent controlled fans

Plexiglas base plate

White LED interior lighting

High Strength Rhodium RCA Jacks

Selected high-end SANKEN® transistors

Extremely low distortion LM4562 OP with 0.00003% THD+N

Ground Zero exclusive Mundorf Mcap® capacitors

Custom designed audio specific Mundorf secondary capacitors for maximum buffering

Encapsulated ALPS potentiometers with channel-separated level control and summing function

Low-tolerance Vishay Dale emitter resistors for optimal operating point stabilization

Copper-anodized extruded aluminum heatsink

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Technical data:

• Type 4 Ch Class AB > A
• Output power @ 4 ohms (CEA*) 4 x 150 W
• Output power @ 2 ohms (CEA*) 4 x 270 W
• Output power @ 1 ohm (CEA*) 4 x 425 W
• Bridge power @ 4 ohms (CEA* / 10% THD) 2 x 650 W
• Bridge power @ 2 ohms (CEA* / 10% THD) 2 x 1000 W
• Variable bias setting Yes
• Lighting White LED interior lighting
• Dimensions 59 x 6.75 x 23.6 cm

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