| Brand | Cadence |
| Trade name | QRS 4.125GH |
| Type | car amplifier |
| Length | 440 mm |
| Width | 192 mm |
| Height | 59 mm |
| Channels | four-channel |
| Rated power (4 Ohm) | 500 |
| Maximum power | 800 W |
| Power of channel 1 (4 Ohm) | 125 |
| Power of channel 2 (4 Ohm) | 125 |
| Power of channel 3 (4 Ohm) | 125 |
| Power of channel 4 (4 Ohm) | 125 |
| Ability to work at 2 Ohms | + |
| HDF, no more | 0,0005% |
| Impedance | 4 Ohm |
| Sensitivity | 86 dB |
| Frequency range from | 20 Hz |
| Frequency range up to | 30000 Hz |
| Amplifier class | GH |
| Manufacturer | China |
| Warranty / Service | 12 months |
| Price per | pcs |