Audio input 1 has Phantom power supply & get the priority over the other audio inputs through an external command or automatically thanks to the `VOX' circuit. Dual RCA connectors can be used to link stereo (unbalanced) sound sources (e.g. CD
- MP3 players, tuners, etc.). The amplifier output is available either for low impedance loudspeakers (min. 4 O) or 100
- 70 V constant voltage line (for loudspeakers having 100
- 70 V transformers). It can also be powered by batteries (voltage: 24 V dc), in order to ensure its proper operation even when the mains supply is unavailable.