... , durable, has a long history Newly AK-28 amplifier OK for the karaoke amplifier designed for use, durable, adjustable flash by an ... +150W Total Harmonic Distortion: 1kHz,8ohm,50W Input Sensitivity / Impedance: MIC: 6mV/3.3k ohm DVD,TAPE,AUX 300m/47k ohm ... ohm Music output: 2.2V/2.2K ohm Frequency Response: MIC: 20-20kHz,3dB Music: 20-20kHz,3dB Music control Video ...