| MODEL | | A150.4 | A300.4 | A500.4 |
| Power (Both channels driven) | 2Ω (EIAJ) | 360W x 4 | 450W x 4 | 800W x 4 |
| 4Ω (RMS) | 150W x 4 | 270W x 4 | 450W x 4 |
| 8Ω (RMS) | 90W x 4 | 150W x 4 | 250W x 4 |
| Bridge Mono Mode | 4Ω (EIAJ) | 720W x 2 | 900W x 2 | 1600W x 2 |
| 8Ω (RMS) | 300W x 2 | 360W x 2 | 900W x 2 |
| Input Sensitivity (Limiter Off) | | 0.9 – 1.1V (+0/-1dBv) |
| Input Impedance | | 20kΩ balanced or 10kΩ unbalanced |
| Frequency Response (At 10dB below Rated Output Power) | | 20Hz~20kHz (+0/-1dB) |
| Voltage Gain | | 28 (+/-0.5dB) | 30 (+/-0.5dB) | 33 (+/-0.5dB) |
| THD + N (1kHz 1/8 Rated Power, A-Weighted) | | <0.1% |
| S/N Ratio (Ref. 1kHz, A-Weighted) | | > 96dB |
| 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, C, D – Rear : 8 preset modes |
| Indicators | | POWER: 1 blue LED – PROTECTION: 4 red LED – SIGNAL: 4 green LED – CLIP 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 |
| Weight | | 4.6 kg | 6.2 kg | 6.3 kg |
