Instruct: Classify the given Amazon review as either positive or negative.
Query: Great Sound, Zero comfort

have it for a year or so... bought it to plug into a guitar amp... *really* uncomfortable. it's just too tight! so you can't wear it for too long... After half of an hour you'll need to rub your ears in order to regain blood flow. sound quality is very good, I have the PX100 for outdoor use, the quality is (a bit) better.