hilde45-
Just for some new audio kicks NOS 6L6GC subs can still be found for reasonable cost. You're probably familiar with Brent Jesse?
"Also, I would like to hear how vintage 6L6’s sound in a Primaluna"
toddnlg- if you're referring to the LOW VOLTAGE 6l6G(not GC), been using RCA 6L6G in a PL HP as the preferred compromise for EL34 mids/ KT88 bass.