Powerful 2.1 class-D amplifier with RCA and Bluetooth for gaming and more! With integrated Bluetooth 5 receiver, RCA input and separate controls for the subwoofer, Fosi Audio offers a solid range of product features in its BT30D Pro. Compared to the smaller BT30D model without Pro, it has a higher power rating of 2x 165 watts + 350 watts instead of 2x 50 watts + 100 watts, starting from two amplifier ICs at once. Technically, the model also relies on a different class D amplifier IC at its core, which tends to be better. In the following review, we have taken a closer look at these features in practice.