yes, i've been on my hobby horse about wav versus flac for years now, going back to my hqplayer days.
i've gone in to see BobV at Rhapsody a few times this year to listen to the extreme and olympus.
over the past few years, my tests with the extreme had convincingly showed me (plus Ed and assorted friends) that WAV was superior to FLAC or qobuz, using my totaldac rigs. this is not the case for every track but on many, it is very obvious to hear.
setup: extreme--usb to sotm reclock/convert to aes/ebu--totaldac reclocker--totaldac triunity
(no live clock upgrade yet)
my first visit this year we compared: (with his wonderful allsyvox speakers, xdmi analog with about 7-10 days burn in)
1. extreme--usb-esoteric dac (WAV)
2. olympus+io--xdmi analog (qobuz)
in comparing 1 and 2, it was unexpectedly close with 2 having a wider soundstage but not blowing extreme+wav out of the water. i'd give 2 a SQ gain of 20-30%, not at all what i had expected. because now we know the xdmi-analog needs more time to break in, plus qobuz requires flac decoding, i can't really assess how much the olympus+io was limited by burn in time versus flac decoding.
my second visit (same speakers) was olympus+io only, comparing WAV local files and the same music on qobuz, but now there had been over a month of burn in time for the xdmi analog. here the WAV was, as BobV said, "night and day" better. my objective for the visit to rhapsody was to determine if the WAV/FLAC SQ delta still existed in the Olympus and it clearly did. since the olympus is so very low noise, i'm quite surprised the added computation processing to decode flac could be audible. my guess is something else is going on. or is it somehow system dependent?
after this, we all went downstairs to listen to bobV's wonderful SET driven horns, using the xdmi-analog output and only listening to local WAV files. this was alsolutely EXQUISITE, just stunning. we didn't even try streaming and went into pure listening (not analyzing) mode. as steve williams has said, 'you can't unring the bell'. the sound was so good that i found myself wanting an olympus even though it is way out of my price comfort zone. i can't wait for some of that trickle down goodness to come to the extreme.
i've since done a little bit screwing around with various music converter programs but really have not been able to draw useful conclusions and i do not have the requisite skills (or patience?) or tools to dig into the formatting of music files, bit level comparisons, decoding and buffering strategies in software etc. Ed et taiko are aware of this and are looking into it. i trust they will get to the bottom of this. i've been in the background on this for a while and hope that since the cat is now out of the bag, we'll have some patience while taiko digs themselves out from under a pile of silver anodization. i expect 2025 to bring even better SQ, particularly for streaming.
miscellaneous:
--a great track to use is the Weaver's "guantanamera" from their live concert at carnegie hall (Red Book version, i don't like the 24-96 version)
--my default music converter has always been dbpoweramp which, after fixing metadata in a tag editor, i use to convert flac sources to wav.
--my dac is limited to 24-192 so higher bit rates are a non-issue here.
--all my SQ evaluations of WAV/FLAC have been red book only, which is the vast majority of the music i listen to.
--if everyone had ordered a black olympus, by now we'd probably have them all shipped AND the wav/flac fix available!!!!

