Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Disappointing

I was never a big Who fan and recently saw an old (late '60's?) Stones concert tape on which they performed, poorly by comparison. But I had fond memories of this album and was looking for hard-to-find surround sound dvd's to play in my car, which comes equipped with it. I've only played it once, and there's the possibility of incompatibility with my system, but it was a big disappointment - poor quality sound which may have taken the heart out of the "opera", which now seems extremely dated. One man's opinion: don't bother.