Instruct: Classify a given Amazon review as either positive or negative.
Query: HK 3480 with quality control problems

I bought a 3480 about six months ago, and almost as soon as I hooked it up, it began making dreadful noises, and the "protect" light would come on. I fixed it partially byunscrewing the cover cases a great deal, but frequently it didn't want to start. With sufficient banging on the side, however, it would eventually start, with noises.I got tired of this behavior (it was nearing speaker-damaging levels) and got a 3380, which, as it turns out is in pretty much the same case, and, for my purposes (classical stuff) works just as well for a hundred bucks less.Perhaps this problem is unique to me. I suppose I could have sent it back, but I thought $199 was worth it to fixthe problem. The 3380 works perfectly (so far!)Jerry O'Dell