Instruct: Classify Amazon reviews into positive or negative sentiment
Query: good sound for about a year

Sound started out good needs more preamp filters especially for radio feed.then buttons that initiate face plate dropping down for cd player began to act up. Next face plate wont move. Tried manufacture reset but did nothing. Talked to Dual and they had a strict 1 year policy so the unit is trash. going back to less flash and more quality IMO.