※ Mono input, unbalanced signal, and has a volume adjustment; ※ high fidelity stereo, professional sound; ※ flexible connection port, easy to use; ※ DC12V and AC220V two power supply options; ※ reasonable structure, nice, wall-mounted installation; ※ built-in high-fidelity hi-fi level high, low-frequency speakers; ※ high efficiency, low distortion, low loss; ※ is very suitable for training rooms, senior hotels and other places;
