I have recently heard an AUDIO on a 80watt per channel amp 7.1 with dolby and dts decoding. This track sounded great on a pair of speakers KEF which i'm now interested to. My problem is that if I purchase these speakers will I have the same sound quality on a 100 watt amp without dolby and dts certifications.

Since its an Audio track I assume that the sound quality won't change at all since audio tracks don't contain any dolby or dts sound formats.