| MODEL | | AH150.4 | AH300.4 | AH500.4 |
| Power 70V (RMS | One Channel Driven | 150W x 4 | 300W x 4 | 480W x 4 |
| All Channel Driven | 135W x 4 | 270W x 4 | 400W x 4 |
| Power 100V (RMS) | One Channel Driven | 150W x 4 | 300W x 4 | 480W x 4 |
| All Channel Driven | 135W x 4 | 270W x 4 | 400W x 4 |
| Input Sensitivity (Limiter Off) | | 0.9 – 1.1V (+0/-1dBv) |
| Input Impedance | 20kΩ balanced or 10kΩ unbalanced |
| Frequency Response (At 10dB Below Output Power) | 100Hz~15kHz (+0/-3dB) |
| Voltage Gain (100V) | 40 (+0/-1dB) |
| THD + N (Ref. 1kHz 1/8 Rated Power, A-Weighted) | <0.1% |
| S/N Ratio (Ref. Rated Power, A-Weighted) | > 95dB |
| Crosstalk (Below Rated Power) | > 70dB |
| Damping Factor (1kHz, 8W) | > 200 |
| Power/Output Circuity | Switching Power Class-D |
| Protections | Full short circuit, open circuit, thermal, ultrasonic, and RF protection stable into reactive or mismatched loads, turn ON/OFF, muting, tried crowbar. |
| Controls | Front: On/Off Power Switch, Volume Channel A, B |
| Rear : 70/100V selector |
| Indicators | SIGNAL: 4 green LED – CLIP 4 red LED |
| POWER: 1 green LED – PROTECTION: 4 red LED |
| Connectors | Inputs: Euro Block – Outputs: Euro Block |
| Power Supply | AC: 110-120V or 220~240V 50/60Hz |
| Dimension (W x D x H) | 483 x 360 x 44 mm | 483 x 360 x 44 mm | 483 x 360 x 44 mm |
| Weight | 5.4 kg | 6.2 kg | 6.3 kg |
