Review on Powerful 200W Mini Mono Subwoofer Amplifier - Fosi Audio M03: Full-Frequency and Sub Bass Switchable, Perfect for Home Theater & Single Power Subwoofer by Paty Fernandez

I bought a Sony BDV-N9200W a few years ago and recently upgraded to STR-DH790. I repurposed speakers from an old setup. As this is a home cinema in a box the amplifier will power the subwoofer but unfortunately the STR-DH790 cannot power the subwoofer. So I bought a 300 watt Fosi M03 subwoofer amplifier to fill the gap while having better speakers and a powered subwoofer. The amplifier is quite small and unobtrusive, but still delivers enough power for the subwoofer. I don't use a crossover as everything is handled by my main amp. Overall I am very happy with this purchase. If I turn up the volume, I can shake the whole apartment. although the subwoofer is not super powerful. I didn't hear any distortion even at high volume.