In addition to all the foregoing comments, it seems to me that silver (and silver alloy) cabling tends to accentuate the high frequencies. So if anything, your cables are adding to the HF extension, not detracting from it. Must be something else.
Essentially, it sounds like you have new (or newly replaced) tubes throughout your system. Give them a 35 hour week of regular daily play (that means at least 5 hours a day) and if beginning the second week, things don't start to sparkle, then it's tube rolling time!
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Essentially, it sounds like you have new (or newly replaced) tubes throughout your system. Give them a 35 hour week of regular daily play (that means at least 5 hours a day) and if beginning the second week, things don't start to sparkle, then it's tube rolling time!
.