John (NASaMAN) you are spot on, The q45st adds more musicality into the system, there is more harmony.The only way to know what the q45st does applied it in your system. Though $349 is not cheap? You tell me after you applied it if really worth it.I agree with David ,the resulion and informations does create confusion . When we were texting you loaded me lots of information On q45st, You got me curious because you were so into the q45st, I end up ordering 5 ml one bottle? I should have ordered 10 ml to be honest.John , David is also a friend of mine, it started when I challenged him to come and visit , I buy Him beer and pizza , next thing I know He is in Chicago visited Teajay and Allen . He came to visit , he got his delicious pizza and his cold beer, He is very nice and very passionate on Audio.