Noise Cancelling Mini Karaoke Mixer 3RCA Input & 1RCA Output Stereo Sound Mini Dj Mixer Description: This digital mixer is capable of adjusting keynote and mixing sound, giving out different stereo signals to achieve a super powerful musical rhythm. 3-channel RCA input, 1-channel microphone input and 1-channel RCA output allow you to create more shocking music. Furthermore, each input channel can be adjusted volume individually, which makes music rhythm control easier for better sound effect. Features: Multi-channel Input & Output - 3-channel RCA input, 1-channel microphone input and 1-channel RCA output help make music rhythm more shocking. Independent Volume Adjustment - Each input channel can be adjusted volume individually, which makes you control music rhythm more conveniently and create more shocking sound. Noise Cancelling Sound - High signal to noise ratio that higher than 90dB makes sure a super clear sound. High Gain - Channel 1 gains 32dB, and channel 2, gains 26dB and channels 3, 4 gain 26dB. Makes music clearer and louder. Wide Compatibility - This Mini Karaoke Mixer is suitable for TV/phone/MP3/Mac Mini/PS3/Xbox/FM Tuner/Phono Player, Amazon Echo Dot and microphone input. Specifications: Product type: Mini Karaoke Mixer Input: 3-channel RCA input, 1-channel microphone input Output: 1-channel RCA output Gain: Channel 1 gain: 32 dB XLR jack          Channel 2 gain: 26 dB          Channel 3, 4 gain: 26 dB Signal to noise ratio: >90 dB THD: <.008% IMD(SMPTE): <.008% Suitable input: For TV/phone/MP3/Mac Mini/PS3/Xbox/FM Tuner/Phono Player, Amazon Echo Dot, microphone input Package size: approx. 23 * 12 * 5.5 cm/ 9.06 * 4.72 * 2.17 in Package weight: 531g Package List: 1 * Mini Karaoke Mixer 1 * Power Adapter 1 * User Manual Note:CH1 is the microphone channel. When the volume of CH1 is turned on to the maximum, there will be background noise. This is normal. If CH1 is not used, please set the volume of CH1 to the minimum.