| Product name | professional karaoke 12 inch bass subwoofer power speaker for concert |
| Model | KU-20 |
| Material | wooden |
| Speaker Unit | 12 inch bass + 3 inch tweeter |
| Power | 400W |
| Nominal impedance | 8Ω |
| Frequency response | （±3dB）50Hz-18kHz |
| Max SPL（Pmax@1m） | 132dB |
| Usage | stage/classroom/conference/concert |