Tempting! I am on the fence about throwing $1700+ on Tak 2A3s for my WA23 (leaving the rectifier alone for now), but fluctuating between tubes or upgrading power conditioner or going all out on a total DAC. The latter being most expensive obviously, but the most likely immediate boost in SQ as its an actual component upgrade.
What DAC are you currently using, and what are you thinking of potentially upgrading to?