Frequency Response: 50Hz~18KHz Speaker: 8-inch, full-range Matching Transmitters: Optional ACT-707HE, ACT-707TE, MH-801a, MT-801a, MH-203a, MT-103a Matching cabled microphone: Optional MM-10 CD Player and Cassette Recorder/Player: Optional Note: Varied specifications on carrier frequency range, maximum deviation, RF output power and spurious emission to comply regulation of different countries. Weight: 14.8kg / 32.6lbs T.H.D.: <0.1% Exterior Color: Black Dimensions: 310(W)?445(H)?240(D)mm / 12.2(W)x17.5(H)x9.4(D)" Power Supply: Built-in two pieces of 12V/4.5AH rechargeable battery with charger & 100~240V AC switching power supply. Charging & Operating Time: 6~8 hours continuous use per 8 hours charge (automatic charging management) Power Output: 70W(rms)/4O, 100W(MAX)/4O Audio Inputs: Balanced, Unbalanced Mic & Line-in |