SD-4000
| width | 430mm |
| height | 130mm |
| depth | 340mm |
| power supply | 220V |
| power | 500W |
| power left | 250W |
| power right | 250W |
| peak power left | 350W |
| peak power right | 350W |
| peak power | 700W |
| frequency range | 20~20KHz |
| impedance | 8Ω |
| AUXIN channel | 3 Channel(s) |
| microphone channel | 2 Channel(s) |
| stereo | support |
| mp3 player | support |
| bluetooth | support |
| USB Disk | support |
| SD Disk | support |
| Display | LCD |
| optical input | support |
| coaxial input | support |
DESCRIPTION
The SD-4000 features the latest international fully digital DSP chip for reverb, with a powerful microphone feedback suppression function and built-in automatic noise reduction. It also has a professional-grade 24-bit digital reverb circuit for richer and more natural sound. The device includes comprehensive speaker protection features such as overheating, short circuit, and DC protection. A temperature-controlled cooling fan enhances the unit's heat dissipation to meet long-term operational requirements. The MP3 player comes with an LED digital display for easy and intuitive operation.
The SD-4000 has microphone reverb adjustment, microphone reverb repetition adjustment, and microphone high, mid, and low tone adjustment functions. It also includes up to a dozen built-in sound effects settings that can simulate various environmental sound effects. The device also includes an EQ equalizer adjustment function.