| Model | FQB1500D | FQB250 | FQB450 | FQB4.1 | FQB5.1 |
| Channels: | 1 CH Digital | 2 CH Mosfet | 4 CH Mosfet | 5 CH Mosfet | 6 CH Mosfet |
| RMS Power: | 500WX1 @ 4Ohm | 50WX2 @ 4Ohm | 50WX4 @ 4Ohm | 50WX4 @ 4Ohm+180WX1 | 50WX5 @ 4Ohm+150WX1 |
| Low Pass Frequency: | 30Hz - 300Hz | 40Hz - 240Hz | 40Hz - 240Hz | / | 180Hz |
| High Pass Frequency: | / | 40Hz - 240Hz | 40Hz - 240Hz | / | 180Hz |
| THD: | ≤0.5% | ≤0.5% | ≤0.5% | ≤0.5% | ≤0.5% |
| S/N Ratio: | ≥90dB | ≥90dB | ≥90dB | ≥90dB | ≥90dB |
| Bass Boost Center Frequency: | 50Hz | 50Hz | 50Hz | 30Hz - 300Hz | 30Hz - 300Hz |
| Bass Boost : | 0 - 18dB | 0 - 6dB | 0 - 6dB | 0 - 18dB | 0 - 18dB |
| St Separation(+A): | / | ≥50dB | ≥50dB | ≥50dB | ≥50dB |
| Frequency Response: | 10Hz - 20KHz | 10Hz - 20KHz | 10Hz - 20KHz | 10Hz - 20KHz | 10Hz - 20KHz |
| Auto Protection; | Thermal(75 ℃ ), Overload, Short, Reverse Polarity, Speaker Shortcut Protection | ||||
| Dimensions | 180X245X55mm | 180X245X55mm | 290X245X55mm | 400X245X55mm | 450X245X55mm |
