Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: sound quality is very bad..can barely hear it.

i have not watched really much of the documentary...It DOES look interesting..but the sound quality is seemingly just awful. I dont know if the production company maybe made an error when they made my dvd set. I have turned the sound up nearly 3/4 of the way up..and can barely hear it at all.maybe i recieved a pirated copy? anyone can tell me who the production company is of this dvd set?thanks