Ground Zero GZIA 135.4

4-channel amplifier with class A/B circuit, integrated active crossover and black anodized heatsink 4-channel amplifier Class AB technology Variable active crossover and bass boost Stable power supply Large terminals Black anodized heatsink with Ground Zero lettering High-level input with auto-on function Model High-Quality Class A/B amplifier Channels 4 Output Power (@ 4Ω) 4x 100 Watts RMS Output Power (@ 2Ω) 4x 140 Watts RMS max. Output Power (CEA-2006A / 10%THD+N) 640 Watts Output Power (@ 4Ω) bridged 2x 280 Watts RMS Frequency Response 8 Hz – 28 kHz HPF / LPF / BPF ● / ● / ○ Bass Boost / Phase switch ● / ○ High level input / Auto-on ● / ● Remote ○ BIAS Setting ○ Linkmode ○ Dimensions (W x L x H) 168 x 49 x 278 mm / 6.61″ x 1.93″ x 10.94″