2.0CH Stereo Audio Amplifier Receiver with Active Subwoofer Output,RMS 60W,Max 600W,Home Audio Amplifier,Bluetooth 5.0 HiFi Amp Echo/MIC/USB/SD/AUX/FM for Karaoke-BT-198E

2.1
Channel Subwoofer Amplifier: Bluetooth Stereo Amplifier Receiver delivering 20W×2(L/R)+40W (sub), capable of driving most home/car/marine/outdoor passive speakers and subwoofers, and well suited for your karaoke, home theater, acoustic sound system, and monitor headphones.
Wireless Connection: Premium Bluetooth modules and finely tuned antennas ensure reliable range and low latency. It supports RCA & AUX Inputs, with a connection range of up to 15 meters, and both reception and transmission remain highly stable. Enjoy your headset without any audible pop-up noise. *Bluetooth transmission distance may vary depending on the connected Bluetooth devices.
Hi-Fi Sound: It features a high capacity transformer that delivers clear sound without any distortion. It has a harmonic distortion of less than or equal to 0.05 %, helping you listen to crystal clear and sharp music (NOTE: NOT surround stereo sound, perfect for listening to music). Bass & Treble & Sub Vol Control: Designed with main volume, treble, and bass control knobs, allowing for more delicate adjustment of the sound, offering much fun and high playability. Besides main volume, treble, and bass control, a dedicated sub volume control is included. These let you manage the volume of the passive subwoofer and two passive speakers separately as you prefer.
Easy To Use: 5.9 x 3.5 x 1.2" / 15 x 11.7 x 3.8 cm mini size, amplifier
weight: 0.66 pounds / 0.3 kg. Comes with a DC 12V 3A adapter, making this ST-838 amplifier a very good deal. You don't have to search for an adapter with a 5.5 x 2.5 mm plug in your pile of old power adapters or pay for another one. You can take it anywhere, and the remote control makes it easier and more convenient to operate. SD/TF card and USB plug-and-play