Check the listing for details. Professional Karaoke Processor Audio Processor Pre-Effects KTV Digital Audio NEW. Color: Black, Condition: New. Listed at 118.00 USD. Professional Karaoke Processor Audio Processor Pre-Effects KTV Digital Audio NEW Description:Professional pre-amplifier adopts dual-mode reverb processing, which makes the vocal effect more abundant, natural and transparent. It is a high-fidelity smooth natural sweet style stereo dual reverb and multi-purpose karaoke effect. The output has front (rear) left and right channels, center channel, and subwoofer frequency channel. And it is very simple and convenient to use like karaoke amplifier.High-grade aluminum alloy panel is transported, 1U ultra-thin design, using karaoke adjustment to make debugging more convenient and easy.The microphone is equipped with 6-band parameter equalization adjustment, the adjustment range is wider, the sound is more delicate and soft, and the original tone is not damaged, the single-band sound quality effect is improved, and the howling frequency is effectively processed.Subwoofer channel output design with crossover point and adjustable output gain; Subwoofer channel has a perfect anti-low-frequency self-excitation circuit, when entering the MIC, the low-frequency signal output port is automatically attenuated by half to prevent low-frequency howling and damage to the device ; With microphone does not enter the Subwoofer channel function.The center output channel design can choose music/reverb ratio or pure human voice; and can independently control the volume and high, medium and low frequency adjustment.There are 5 channels of MIC input, 2 channels on the front and 3 channels on the rear panel.This machine has Bluetooth audio input, optical fiber input, USB input.LED display screen, switch on/off display trademark, four sets of output with spectrum jump.Parameter:Signal to noise ratio/left and right channels (1KHZ, 0dB): 90dBTotal harmonic distortion: 1KHz-3dB 0.03%Sensitivity: MIC: 6mv/4KΩAUX: 280mv/30KΩFrequency: MIC: 40Hz-15kHz + 1 / -6dBTone: Music: Bass: + 10dB (100Hz)Center channel: 87dBSubwoofer channel: 87dBSeparation: 75dBSound quality adjustment range/music bass:±10dB(100HZ)Treble:±10dB(10KHZ)Microphone bass:±10dB(100HZ)Treble:±5dB(10KHZ)Double echo effect: output level: 2.8V/KΩMicrophone squelch threshold: over-voltage 3MV, start-up time 3SDistortion (1KHZ, 30MV): 0.03%Power: 25WDimensions: 482 (length) x47 (height) x163 (width) mm Note: Please allow minor errors due to manual measurement. Item color displayed in photos may be showing slightly different since monitors are not calibrated same. Package Contents: 1pc of Audio Processor1pc of Using Manuel1pc of Power cableNOTE:1.lmport duties, taxes and charges are not included in the item price and the freight. These charges are the buyer's responsibility.2.Please check with your country's customs to determine what these additional costs will be prior to bidding/buying.3.Please leave your valid phone number when you make order, otherwise we can't guarantee the package would arrive smoothly.RETURN:1.Return accepted in 30 days after you receive the item. The buyer need to affordthe return postage fee who also need to return it to our designated place.2.Return package must be in the original packaging, item must be in new condition.Missing parts or any damaged by the buyer will not give any return.3.Within warranty period, all repair parts will be free, but the buyer need to pay for the freight.