HT21 2.1 Channel TDA7498E 160WX2+220W Bluetooth Digital Power Amplifier Module and Low Tone Subwoofer 2.1 channel configuration with a dedicated subwoofer channel TDA7498E based digital power amplifier delivering 160W per main channel and 220W for the subwoofer channel Builtin Bluetooth for wireless audio input from smartphones, tablets, and other Bluetooth sources and Low Tone controls to shape bass and treble response Compact module designed for easy integration into DIY audio projects and small enclosures Suitable for 2.1 speaker builds and multimedia systems that require a dedicated subwoofer Provides clear, dynamic sound with strong bass and low distortion Ideal for DIY home audio, small home theater, and multimedia setups where wireless streaming is desired Designed to align with the original model HT21 specifications and features for reliable performance