heliosphann
Headphoneus Supremus
Can't get away from them I use the REN904 and Phillips E424 in my preamp these old tubes just sound great.
And look neat too The E424s have no coating so you can see the internals.
Love these tubes.
Tubes are pretty amazing. They're like functional art, especially the older tubes. Something very "real" about them, as opposed to hidden electronics in a black box.