S20 Home Dual Speakers Bluetooth TF Card External Sound Card Audio1. With DSP digital processing chip, this sound card integrator can not only achieve independent adjustment of high and low sound, reverb, accompaniment, recording, etc., but also intelligent noise reduction to solve the whistling problem for you, making singing easier. 2. Not only does it come with cool breathing lights for a different visual experience, this multifunctional sound card is also a wireless Bluetooth compatible speaker, providing you