The HTA20 is a 20-watt Class A/B amplifier that features amber toned pre-amp tubes that provide a warm sound, making it a perfect addition to any music enthusiast's setup. A built-in sub out allows you to add low-end to your music. The built-in USB DAC lets you easily connect your computer audio to your external speakers, and Bluetooth 5.0 allows you to connect your phone or tablet for wireless streaming. For those who prefer to listen in private, the quick and easy headphone connection provides a convenient option. With the HTA20, you'll enjoy high-quality sound with a refined look.