I have been advised to not use one of those in the UFO. May not 'blow-up' but it is high gain etc so have no idea how this one would sound. I did go ahead and send the one I had back to the original seller anyway. Never tried it. I have used a 6n23p, 6n6p, 6n5p and the original 6n1p-EV. All work perfectly. All were NOS. I will eventually get a 6922, but not right now. Not sure which one is good without another mortgage.

Some are ridiculous priced. Have a Happy Independence Day [smiley=icqlite20.png]
CAJames~
6N2P is like a 12AX7/ECC83, so not a good match for a UFO. But if you have (or might get) a phono stage that uses those tubes it would work
there.
Currently using a 1953 NOS RCA 5u4g Rectifier, original 6p15p-EV red tipped outputs, NOS 6n23P input. This particular 6n23p seems to have more gain..even though I do not need more gain through our speakers. A very NICE sounding tube too.