100V line mixer-amp with digital amplifier in a compact housing. Onboard audio player accepts USB media for digital audio or can be tuned to FM radio stations. In Bluetooth mode, a smart phone or tablet may be paired with the DM25 for wireless audio playback. Mono output to either 100V line or 4-16 ohms speaker load is connected via spring terminals on the rear panel. All-in-one solution for small sound installations.