STARAUDIO STARAUDIO Professional Stage DJ 4 Channel 2000 W Amplifier Powered Console Mixer MP3 Bluetooth USB SD 16 DSP SMX-4000B Specifications: Channel MIC/LINE: 4 CH Peak Power : 2000W Total Harmonic Distortion ≤0.05% Frequency Response 20Hz–18KHz Max Outputs 4V Max S/N Ratio ≥90dB Input Sensitivity Mic-50dB Line-40dB Input EQ HI±15dB/12KHz MID±15dB/2.5KHz LOW±15dB/80Hz PHONTOM POWER +48V 110V/230V switchable Shiping Weight: 13.5lbs Box Size:15″ X 14″ X 7.5″ Main Features: One Group AUX output andOne Group return High precision 45mm long life faders With 16 DSP Digital effects Recording and headphone listen output With MP3 player Dual 5 band EQ Package Includes: (1) 4CH powered Mixer (1) USER’S MANUAL (1) Power Cord Feedback: ☆We’re always working to improve the quality of our services, we are hoping to get your positive feedback and 5 Star DSRs in return, so that we could do better for you in the future! ☆If you have any problem or unsatisfied with our products, please do contact us first. We will do our best to satisfy you. Your100% satisfaction is our power to advance! Contact Us: We have 100% satisfactory guarantee, If you are not satisfied with your purchase for any reason, Please DO contact us and we will help to resolve your problem. And normally emails will be response within 1 business day. ☆For all the Brazil buyer please provide the Tax registration number . ☆ For all the Russian buyer please provide The Contact personal fully name and fully shipping address.