| Brand | Hertz |
| Trade name | H 604 |
| Type | car amplifier |
| Length | 365 mm |
| Width | 223 mm |
| Height | 51 mm |
| Channels | four-channel |
| Rated power (4 Ohm) | 340 |
| Maximum power | 520 W |
| Power of channel 1 (4 Ohm) | 85 |
| Power of channel 2 (4 Ohm) | 85 |
| Power of channel 3 (4 Ohm) | 85 |
| Power of channel 4 (4 Ohm) | 85 |
| Ability to work at 2 Ohms | + |
| SNR, however | 95 dB |
| HDF, no more | 0,0004% |
| High-level input | + |
| Built-in crossover | + |
| Frequency range from | 10 Hz |
| Frequency range up to | 50000 Hz |
| Amplifier class | AB |
| Manufacturer | Italy |
| Warranty / Service | 12 months / 24 months |
| Price per | pcs |