Claritycap MR

Anyone tried these coupling caps in there tube amps
The smallest size is 1uf can I use a larger size if the stock coupling caps in my amps are only .22uf
Do I risk phase anomolies
Anyone ?
I used them in an Pass B1 buffer, I liked them. If you need a smaller value, check out Claritycap ESA's.
Thanks Face
It looks like the ESA doesn't have the spaciousness of the MR in your Pass are they sounding neutral or a tad on the warm side ?
Anyone have experience with Dynamicaps as couplers in Tube amps