Due to the unavailability of the original source elements for 'Bonnie & Clyde,' Warner has not produced a new surround remaster for the film. This Blu-ray offers only an English Dolby Digital 1.0 Mono track (192kbps), and there's little noteworthy about it.
As there is no surround presence or even stereo separation to speak of, the action is all from the front. At least the source that Warner did have to work with sounds rather good for a 1967 film, with a decent sense of realism and warmth. I expected worse -- high-end isn't nearly as brittle as other tracks of this vintage that I've heard, and there is a decent amount of low bass. Dialogue can suffer a bit, however, with some low tunes muffled, while louder scenes can grate on the eardrums. All things considered, however, this is a perfectly fine mono track.