Input options 3.5 mm stereo input USB audio input Bluetooth 5.0 RAC input TF card USB input (can be connected to computer, mobile phone, OTG) Power and performance Uses the TPA3116 chip Maximum power up to 50 W With a 12 V 5 A supply, actual output is 30 W per channel into 4 ohms (30 W x 2) Sound quality HiFi sound with clear details No audible noise Circuit optimized to remain noise even at maximum output Key benefits Broad compatibility: supports multiple input methods for easy integration with computers, phones, tablets, and OTG devices Strong, reliable amplification: significant power available for driving small to midsized speakers Consistent, clean audio: optimized design delivers clear sound with minimal noise at higher output levels Use scenarios Home desk or living room upgrade: connect to a computer, TV, or phone via USB, Bluetooth, or 3.5 mm input to improve speaker performance Wireless playback in small rooms: stream audio via Bluetooth 5.0 for a clutter setup DIY audio projects or existing systems: use TF card for offline playback or connect to an existing stereo setup through RAC input for enhanced amplification Notes Compatible with devices supporting the listed input methods Provides robust output suitable for 4 ohm speaker loads Designed for reliable operation with a 12 V 5 A supply