Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Superb series, rubbish DVDs

One of the very best TV dramas ever made, enjoyment of it is almost totally ruined by appalling picture and sound quality. I have no idea what "digitally remastered" means, if this is the result. It's a disgrace to charge almost $250 for a product this inferior. I actually thought my copy was a bootleg, made by some bloke pointing a digital camera at a TV screen -- it's that awful. There is also a constant "shadow" track on the audio, which sounds as if someone has a radio on in the background. Just disgraceful. Avoid.