FrederikOlsen said:

Indeed. On the subject of the sound, it has always surprised me that people were complaining about the sudden shifts in sound quality in ANH. Especially during Tarkin threatening Leia. Some of these lines have always sounded awful for some reason. Bad ADR, I guess. So ANH is definitely all over the place when it comes to the sound.

Luke's "It just isn't fair. Biggs is right, I'm never gonna get out of here" has always bugged me - that one sounds like it was recorded in a tin can.

Yeah there is a marked difference in the audio recording of ANH compared to the other two, its like they hadn't recorded the vocals very well....listen to Vader for example....no bass in his voice....sounds a bit clipped.

I would compare the vocal recording to Jaws...it sounds similar