45 rpm versions of audiophile lp's are more about 'old wine in a new bottle' than great audible differences. i have worked in the music business since the 1970's and unless the lp pushes the limits in terms of 'total time' a 33 sounds pretty much the same. also albums were meant to be played uninterupted through each side(any artist, producer, or engineer would agree).....changing discs to accomodate 45rpm destroys the magic of continuity......god bless classic vinyl for staying in business even though these tricks won't play with everyone.
33 vs 45 speed quality
I just got into analog recently. My TT is a rega P9 which blows away my cd player for music quality. But...in truth I cannot tell any difference between 33 and 45 speed recordings. Is it just my ears or is my setup to Lowfi? I am using a Mac 6300 integrated amp and audiophysic spark speakers.