Having a highly resolving system can be your worst enemy or best friend, the balance hangs with both system synergy and personal preference. You may very well have been chasing your tail with tube replacements band-aiding a source which may not have been to your taste. The BHSE (SED winged C’s) and 009’s are my current reference, my preference is for a source on the warm/lush side of neutral, I suspect the K-01 may lend it self to an analytical detailed presentation from reading many of your posts? I’ve not had any experience with the CH Precision C1 DAC, but it’s a departure in implementation from the K-01, being an R2R vs DS and if you believe the hype this may need to be something you need to investigate. Dave I recommend investigating all other available options, don’t get tunnel visioned into this one almighty purchase, DACs tend to depreciate sooner than other audio investments, so factor that in, come 3 years there may very well be a $2,299 DAC lapping at the heels of the CH Precision C1.