The good: I enjoy the sound quality of this subwoofer. I use it to listen to classical music as a bookshelf speaker with my Logitech internet radio.
1. For the sound it only has an RCA input. Needed an additional adaptor cable to convert the 3.5mm output from the radio.
2. The power on/off is manual. When I set my radio to sleep, the subwoofer stays on all night. The system on/off works only with Yamaha sound device.