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The DTA-2.1BT amplifier provides clean Class D power from an extremely compact and lightweight design. It is able to adequately power most speakers, and is also able to power a passive subwoofer. This allows you to create an inexpensive and high-performance 2.1 set up for any office, bedroom, or small home theater. Perfect to power an entire 2.1 system. High-quality binding posts to ensure a solid connection and a professional look. Volume, tone, and sub level control via the front panel for easy attenuation. Bluetooth, RCA, and 3.5 mm inputs for a wide selection of inputs. DTA-2.1BT 100W Class D 2.1 Amplifier with Bluetooth and Power Supply