Review on Bluetooth Amplifier Wireless Receiver Digital Home Audio by Azeem Mendez

Powerful enough to produce (small) room-filling sound on a pair of good speakers and a subwoofer. I would give it 5 stars (and pay $10 more) if it had a line. Anyway, I need to add a buck converter to pass the speaker level signal to my powered subwoofer. Manufacturer's Note: There is no need to add a low-pass filter to the line output. Subwoofers tend to only let through low frequencies, so a simple line-out will suffice.