Smk-link VP3320 GoSpeak Pro Ultra-Portable Amplification System Type: Pro Audio - Systems Connectors: Microphone1 In: 1/4 and XLR Microphone2 In: 1/8 jack Line In: 1/8 input Stereo Line Out: 1/8 output Audio: Frequency Response: 100Hz - 10Khz+/-3db Input Sensitivity: -64db+/-1db (0 dB=1V/pa) Dimensions: 13.4 x 8.7 x 2.6 Weight: 4.85 lbs.