Instruct: Classify a given review into positive or negative sentiment.
Query: Defective unit

Unpacked the unit, set it up, plugged in my MP3 player and powered it up, and it made a lot of popping noises. Turned if off, checked connections--all good, back on. Popping noises were gone, but only the left speaker was working. The right speaker, not a sound. Turned it back off, re-checked connections--still good, back on and still no sound from the right speaker. As I began folding it up, the right speaker felt like it was very loose and could fall off.On the other hand, after MANY purchases from Amazon, I had an opportunity to go through the online return process. Simple and quick process to print the RMA and label. An A+ for that process.