Fosi Audio BT20A Pro Bluetooth Amplifier Sub allowing the SW15 to integrate

allowing the SW15 to integrate naturally with a wide range of loudspeakers

and noise-free signal transmission

and support for op‑amp customization

Built on the same advanced streaming platform as Matrix Audio’s M Series

you can easily connect an active subwoofer to compensate for the limited low-frequency extension of small active speakers

Fosi Audio BT20A Pro Bluetooth Amplifier Sub allowing the SW15 to integrateThe BT20A Pro is a highefficiency 2. 0channel power amplifier designed for listeners who want strong output, flexible tuning, and modern wireless convenience. Built around TIs TPA3255 chipset, it delivers up to 300 watts per channel with low distortion and a wide frequency range. With replaceable opamps, midpoint bass and treble controls, Bluetooth connectivity, and both speaker and preout options, it offers a customizable and practical way to elevate