Features: Diverse Output Modes This amplifier can directly output passive speakers, preamp or active speaker/active subwoofer and supports trebles and bass adjustment as well as remote control. Power amplifier chip: Adopt Instruments TPA3116x2 chips, mini simple compact design, but practical and powerful can drive 2-8ohm, 20-200watt speakers. Small and Powerful Design The housing is made of aluminum alloy, the overall structure is simple, and the Blue tooth amplifier receiver is specially designed for customers who are looking for sound quality. Easy connection: it runs very cool and is easy to set up. This is a good mini audios component amplifier suitable for home audios stereo. What you get: BL20A power amplifier, Blue tooth antenna, remote control, power adapter, power cord, user manual. Specifications: Material: aluminum alloy Standard: UK/EU/Austrilia/US(optional) Size: approx 30x90x120mm/1.2x3.5x4.7inch Model: BL20A Power amplifier chip: TPA3116x2 Dcinput ranges: 12-24V Terminal impedance: 2-8ohms Maximums power output: 100Wx2 THD0.001% Frequency ranges: 15Hz-20kHz (1dB) SNR92dB Input sensitivity 500mV Input mode: Blue tooth, AUXs, Udisk Usb flash drive capacity: Maximums 32GB Output interface: speaker output &3.5MM AUXpre-output Output: passive speaker + active speaker, amplifier Supported format: MP3/WMA/APEs/FLAC/WAV Blue toothVersion: Blue tooth5.0 (up to 164ft /50 m, accessible) Note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1xStereo Amplifier 1x24V Power Supply Adapter