Alfatron ALF-250W-UB 250W Class-D Mixer Amplifier
The ALF-250W-UB is a 250W Class-D mixer amplifier and media player designed for commercial audio installations requiring reliable amplification and flexible source options. It delivers 250W of rated output for 70V/100V distributed speaker systems or 4-16 Ohm low-impedance speakers. The built-in media player supports Bluetooth, USB, FM radio, and MP3 playback, with a supplied remote control for convenient operation.
The amplifier provides two microphone inputs, including a front-panel microphone input with priority functionality and a rear balanced microphone input with phantom power, plus an emergency microphone input and two RCA line inputs. Individual controls are provided for Mic 1-2, Aux 1-2, bass, treble, and master volume, while the RCA auxiliary output provides additional system connectivity. Priority operation follows EMC > MIC1 > Other, and the amplifier supports AC100-240V and 24V backup power for added installation flexibility.
The ALF-250W-UB also includes LED indicators for power, clip, protection, and signal status, along with short-circuit, clip, overload, and high-temperature protection. Its combination of distributed and low-impedance speaker support, built-in media playback, priority paging, and backup power makes it well suited for classrooms, retail stores, coffee shops, restaurants, and other commercial audio applications.
