TEYUN PA4 Professional 4-Channel Audio Mixing Console with AMP Stage US Plug. AUX-bus main channel output, One AUX output and backtrack 2-band EQ for each input channel Built-in professional reverb 2-bus electronic balanced display. Total Harmonic Distortion:=0.1%. Input/Output impedance:MIC:2.4KO.Power amplifier:4O 100W x 2. Package Included:1 x TEYUN PA4 Audio Mixer. YOUR Satisfaction is our #1 Priority! We PROMISE we can make you happy if you give us a fair chan. Thank You For Your Business! We guarantee that your issue will be resolved quickly. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Live & Studio Mixers". The seller is "upstreamfocus" and is located in this country: US. This item can be shipped to United States.