【Multiple Funtions】Supports USB, Optical, Coaxial, 3.5mm AUX and Bluetooth 5.0 apt-X input, Infrared receive & OLED display. Note: It is highly recommended that you use this amplifier on a 4ohm speaker. 【Hi-Fi Performance】Adopt Bluetooth QCC3031 & USB CM6642 chips, support aptX, aptX HD & 24bit/192Khz audio; High gain antenna for long range streaming up to 65 ft(20m). 【Great Sound】Class d amp 50Watt x2@4ohm power with low-pass subwoofer output can drive most home speakers, TI NE5532 operational amplifier cores to ensure sound quality. 【Remote Control】Multifunctional remote control for home wireless use with bass and treble control, inputs selector, EQ, mute, loudness setting, etc.