Built-in digital reverb effect Built-in high-quality DSP digital effects processing chip precision processing, the effect of excellent sound real and three-dimensional sense, treble translucent, mid-range full, bass thick, sound more layered; high and low bass adjustments to create high-quality, high-definition non-destructive sound quality, coupled with the high and low tone auxiliary High-fidelity stereo input Professional-grade tuner use, audiophile circuit design, intelligent noise reduction, presenting lossless sound quality, high-definition restore the natural original sound, each channel of the high school bass independent adjustment so that the tone becomes more comfortable, the music sound better; support for one-key recording function Professional three-band equalization adjustment, more accurate adjustment, more comfortable operation, multi-channel microphone separate input, to provide 48V phantom power supply is more convenient to use, compatible with USB / TF card playback, but also has a song selection function, compatible with U disk / MP3 / playback, but also has a song selection switch function Mixer Parameters Total harmonic distortion + noise: <0.002% Frequency Response:20Hz-20KHz 0.5dB Noise:22Hz-22KHz Signal-to-noise ratio:85dB Headphone Output Power:100mw Crosstalk:>82dB between 1KHz channels Equalized treble:12kHz~15dB Balanced Midrange:2.5kHz~15dB Equalized Bass:80Hz~15dB Gain Control:-60dD~-16dB