| 100V models | 
      
        | Output power; 1kHz | 4ohms | 250W x4 | 120W x4 | 
      
        | 8ohms | 210W x4 | 90W x4 | 
      
        | 8ohms; Bridge | 500W x2 | 240W x2 | 
      
        | Output power; 20Hz-20kHz | 4ohms | 230W x4 | 115W x4 | 
      
        | 8ohms | 180W x4 | 80W x4 | 
      
        | 8ohms; Bridge | 460W x2 | 230W x2 | 
      
        | 70V line | 300W x2, Bridge / 16ohms | - | 
      
        | 120V models | 
      
        | Output power; 1kHz | 4ohms | 250W x4 | 120W x4 | 
      
        | 8ohms | 210W x4 | 90W x4 | 
      
        | 8ohms; Bridge | 500W x2 | 240W x2 | 
      
        | Output power; 20Hz-20kHz | 4ohms | 230W x4 | 115W x4 | 
      
        | 8ohms | 180W x4 | 80W x4 | 
      
        | 8ohms; Bridge | 460W x2 | 230W x2 | 
      
        | 70V line | 300W x2, Bridge / 16ohms | - | 
      
        | 230V models | 
      
        | Output power; 1kHz | 4ohms | 250W x4 | 120W x4 | 
      
        | 8ohms | 210W x4 | 90W x4 | 
      
        | 8ohms; Bridge | 500W x2 | 240W x2 | 
      
        | Output power; 20Hz-20kHz | 4ohms | 230W x4 | 115W x4 | 
      
        | 8ohms | 180W x4 | 80W x4 | 
      
        | 8ohms; Bridge | 460W x2 | 230W x2 | 
      
        | 70V line | 300W x2, Bridge / 16ohms | - | 
      
        | 240V models | 
      
        | Output power; 1kHz | 4ohms | 250W x4 | 120W x4 | 
      
        | 8ohms | 210W x4 | 90W x4 | 
      
        | 8ohms; Bridge | 500W x2 | 240W x2 | 
      
        | Output power; 20Hz-20kHz | 4ohms | 230W x4 | 115W x4 | 
      
        | 8ohms | 180W x4 | 80W x4 | 
      
        | 8ohms; Bridge | 460W x2 | 230W x2 | 
      
        | 70V line | 300W x2, Bridge / 16ohms | - | 
      
        | General specifications | 
      
        | Total harmonic distortion | Less than 0.1% (20Hz-20kHz; Halfpower), RL=4ohms | Less than 0.1% (20Hz-20kHz; Halfpower), RL=4ohms | 
      
        | Intermodulation distortion | Less than 0.1% (60Hz:7kHz=4:1; Halfpower) | Less than 0.1% (60Hz:7kHz=4:1; Halfpower) | 
      
        | Frequency response | +0dB, -0.5dB (RL=8ohms, 20Hz - 20kHz) | +0dB, -0.5dB (RL=8ohms, 20Hz - 20kHz) | 
      
        | S/N ratio | 103dB | 103dB | 
      
        | Crosstalk | Less than -60dB | Less than -60dB | 
      
        | Damping factor | More than 100 | More than 100 | 
      
        | Voltage gain | 30dB | 26dB | 
      
        | Input sensitivity | +4dBu | +4dBu | 
      
        | Maximum input voltage | +22dBu | +22dBu | 
      
        | I/O Connectors | Line input / output ports | 4x XLR-3-31, 4x Euroblock | 4x XLR-3-31, 4x Euroblock | 
      
        | Speaker output ports | 4x 5-way binding post | 4x 5-way binding post | 
      
        | Control ports | D-sub 15pin | D-sub 15pin | 
      
        | Processors | HPF (20Hz/55Hz/OFF, 12dB/Oct) | HPF (20Hz/55Hz/OFF, 12dB/Oct) | 
      
        | Protection circuit | Load protection | Power switch on/off mute, DC-fault (Output relay off; Restored automatically), Clip limiting (THD ≥ 0.5%) | Power switch on/off mute, DC-fault (Output relay off; Restored automatically), Clip limiting (THD ≥ 0.5%) | 
      
        | Amplifier protection | Thermal (Mute the output; heatsink temp ≥ 90°C; return automatically), VI limiter (Limit the output, RL ≤ 2ohms) | Thermal (Mute the output; heatsink temp ≥ 90°C; return automatically), VI limiter (Limit the output, RL ≤ 2ohms) | 
      
        | Power supply protection | Thermal (Amplifier shuts down automatically; Operation not restored automatically; heatsink temp ≥ 90°C) | Thermal (Amplifier shuts down automatically; Operation not restored automatically; heatsink temp ≥ 90°C) | 
      
        | Amplifier class | EEEngine | EEEngine | 
      
        | Cooling | Variable-speed fan | Variable-speed fan | 
      
        | Power requirements | Depend on area of purchase; 100V, 120V, 230V or 240V; 50/60Hz | Depend on area of purchase; 100V, 120V, 230V or 240V; 50/60Hz | 
      
        | Power consumption | Music source equivalent | 600W | 400W | 
      
        | Idling | 40W | 40W | 
      
        | Stand-by | 5W | 5W | 
      
        | Dimensions | W | 480mm; 18-7/8in | 480mm; 18-7/8in | 
      
        | H | 88mm; 3-7/16in (2U) | 88mm; 3-7/16in (2U) | 
      
        | D | 412mm; 16-1/4in | 412mm; 16-1/4in | 
      
        | Net weight | 10kg; 22.1lbs | 9.8kg; 21.6lbs | 
      
        | Accessories | Owner’s manual, AC power cable, Security cover, 4x 3-pin Euroblock connector | Owner’s manual, AC power cable, Security cover, 4x 3-pin Euroblock connector |