UHF PLL 2*32 dual channels wireless amplifier teaching system Tone-lock,60-100meters Specifications:Frequency response: 50Hz~15KHz±3dBInput ... (Line)S/N:>65dB (Mic 1,2) ; >75dB (Line) ; >105dB (Wireless Mic)T.H.D.:<0.5% (at 1KHz)Power Supply ... input 5, with 2 *32 channels UHF PLL TONE-LOCK wireless microphone module 6,power out :30W×2 UHF PLL 2 ...