ES 3160-II is a mixer-amplifier with 4 mic-line audio inputs on removable connectors (the first input also has an XLR socket), CD/USB/Bluetooth – MP3 player and tuner and an aux input for an additional external music source. The amplifier nominal power is 160 W, available on either a low impedance output (min. 4 O) or 100 – 70 V constant voltage output (for loudspeakers having 100 – 70 V transformers).