Loquah
Headphoneus Supremus
I find the Mullard 6080 is also a nice sounding tube also and pairs well with the RCA Cleartop mentioned.
Agree. The Mullard 6080WA and the Mullard ECC82 are an awesome combo with brighter headphones, but the 6080WA needs the top end of the Cleartop with neutral-to-warm headphones.