Review on 🔊 Bass-Boosted Bluetooth 5.0 Stereo Audio Amplifier for Home Speakers: BT30A by Jason Hutchinson

The only negative thing is that the crossovers for the subwoofer output are too small. Frequencies above 100 Hz are transmitted clearly through the subwoofer (if no speakers are connected, you can hear vocal notes). In combination with the Polk T-15 it still sounds good though. To be honest I use a DVC car subwoofer connected to 2 ohms. This can make the problem worse. Slightly reducing the "bass" helps to attenuate those frequencies above the subwoofer. And the T-15s are LOUD, so you'll never hear them from a sub unless you put your ear to the sub. Value for money is still amazing. 4 stars only because the LPF seems absent or barely functional. Yes, and the power supply shone on the wall for the first time, but after the first time it never shone again. At first I was a bit worried.