X8 32-Bit DSP Wide Frequency Band Bluetooth Audio Processor Professional Digital Karaoke Processor with Remote Control Features: – Support Bluetooth/USB playback and remote control. This product uses a 24 bit data bus and a 32 bit DSP, with a wide bandwidth, high dynamic performance, and a professional digital karaoke processor with a sampling frequency of 48Hz. This product is suitable for high-end nightclubs, KTVs, HI rooms, slow rocking bar rooms, layout KTVs, private clubs, and multifunctional entertainment venues. Adopting 100% patch technology, the stability of the effect is better. Built in feedback suppression function, professional anti howling technology, no distortion of human voice, high boost voltage. Music input 1/2 switchable settings – USB computer real-time connection control, with a simpler and more intuitive interface operation. High quality professional singing effect, complete audio processing function, fully digital parameter balance, front panel can be controlled and operated, LCD display is intuitive, and operation is faster and more convenient. Specification: Microphone Part: – Input level: 50mVrms – Frequency response: 20Hz – 2KHz – Distortion. 80dB (direct pass) – Parametric equilibrium: 1 – 15 band Surrounding Part: – Input level: 775mVrms – Frequency response: 20Hz – 20kHz – Distortion. 80dB – Parametric equilibrium: 1 – 5 band Mid Part: – Input level: 775mVrms – Frequency response: 20Hz – 20kHz – Distortion. 80dB – Parametric equilibrium: 1 – 3 band Music Part: – Input level: 775mVrms – Frequency response: 20Hz – 20kHz – SNR: > 80dB – Parametric equilibrium: 1 – 7 band Ultra-low Part: – Input level: 775mVrms – Frequency response: 20Hz – 200kHz – SNR: > 80dB. LED parameter display screen 2. Remote control IR receiving 3. Effects interface setting parameter 5. Bluetooth USB previous one 7. Effects volume adjustment 9. Microphone volume adjustment 10. Music volume adjustment 11. USB flash drive data reading 12. Microphone equalization setting 13. Music equalization setting 14. Input switch (AUX1, AUX2, BT, USB, OPT) 16. Usually it costs about 30USD-50USD. Thanks for your understanding. If you receive the item that not satisfied or defective, please do not open case and kindly notify us within 30 days.