12 Channel Audio Mixer Bluetooth USB DJ Sound Mixing Console Amplifier Studio. The product needs to be used with an amplifier! 3 stage equalization regulate, by adjusting knob to adjust the reverb depth and delay effect. Bluetooth function to support wireless docking of most Bluetooth-enabled electronic devices. USB slot, it can be connected to USB flash disk or MP3 and other portable audio equipment. There are 6 modes of music: nature, P0P, rock, jazz, classical, country. Support to conect with wired/wireless/capacitor microphone, applicable to the family KTV, campus speech, meeting etc. Ultra low noise mix head amp design. Maximum input level of microphone: +24dBu. Maximum input level of line: +24dBu. Maximum input level: XLR+26dBu. Frequency response: 20Hz-30kHz±0.5dB. Max Input Power: 15W. Crosstalk (1kHz): > 85dB. Noise (22Hz to 22KHz): equivalent input noise -122dbu, residual output noise. High frequency, broom type, +/-15db, 12KHz. Low frequency, broom type, +/-15db, 80KHz. Mid-high frequency, peak type, +/-15db, 2.5KHz. XLR: 2PIN, 2Kohm, -60+14dbu sensitivity. TRS: tip, 10Kohm, -40+14dbu sensitivity. Size(approx): 51.6cm x34cm x3.7cm. 1 x Mixing Console. 1 x Power Cable. 1 x User Manual. Please allow a little error due to manual measurement. Please use a soft dry cloth to clean the mixer. Do not set any equalizer and level knob to the maximum position, otherwise it may cause acoustic feedback and damage the speaker. Feedback is very important to us. It is impossible to address issues if we do not know about them! Faction is our ultimate goal. We work hard to earn your trust and future business. A If you receive a defective item, you may return it or ask for a discount. Due to time zones, our reply to your questions may not be immediately. If it’s non-workdays, please kindly be patient and wait till Monday. ? Easy installation & Compact Design??? Compact Design?? Unique Appearance?? High Reliability?? Quality Assurance+ 100% After-Sales Service? Nice and Practical, High Quality Packaging? Number of Phono Inputs. Number of Line Inputs. Home Recording, Recording & Live Sound, Stage/Live Sound, Studio/Recording. Maximum input level of microphone. Maximum input level of line. Noise (22Hz to 22KHz). Equivalent input noise -122dbu, residual output noise. 51.6cm x34cm x3.7cm(approx). Mono/Stereo channel EQ 1. Mono/Stereo channel EQ 2. Mono/Stereo channel EQ 3.