To my ears and what I perceive as distortion and/or artifacts that is produced by my tweeters is much reduced with the full CH Precision chain.
Which suggests that it's not the tweeters. I always found your tweeters pure sounding, and that experience was partially what led me to explore reducing the HF distortions stemming from my room acoustics, of which there were many, and still there are some (much less now).
But I do think the CH Precision gear brings an extra level of purity to the table, something I noticed quickly with just the L1 preamp. It sounds as clean as the Music First passive TVC preamp did when you tried it in your system, and as resolving (or even more so?), but with the weight, drive and tonal density that an active preamp can provide -- certainly it does so combined with the X1 external power supply.
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