I used a custom teflon cap that I had made for my older tubeDAC, but you can use Mundorf, V-Caps or others. I recommend a teflon cap with tin film or copper film. Avoid plated Mylar.
I would just use a V Cap or Mundorf caps. I have a pair of Ampohm caps that are no longer in use, which should work here, as long as they fit. I plan to try them one of these days.
It would be great if one of the reputable Modders would pick the Lyr for a Mod package. I can do the soldering but don't enjoy it!
Thanks for the info!