I've used the Byco unit on my recumbent for a couple of years. Other than a speaker failing, I've had no problems with the unit. I replaced the supplied speakers with Radio Shack CB speakers. I thought the supplied speakers sounded too tinny. I didn't trust the hold down bracket so I made an adapter to
hold the unit. I used thread locker on the bolts I used to hold the unit to the adapter and the thread locker ate the plastic! I ordered a replacement holder for the amp. I use a Sony AM/FM CD player with mine. With it turned up, it is plenty loud for me. The sound quality is OK but don't expect studio quality sound. My main complaint is I wish the battery compartment was a little bigger. It uses 4 AA batteries. It is a tight fit. I'm afraid I going to crack the battery compartment every time I replace the batteries. I've never measured battery life. I replace the batteries the same time when the ones in the CD player give up. Over all, I've been happy with the unit.

Garry