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Re: Newbie replacing HP 12UA7 with RCA clear tops : asking for opinion

216.18.8.34

IMHO basically any US made NOS 12AU7 from the 50s sounds great. For EL-84 trash those Sovtek and get something like Brimar/Mullard EL-84 (has to be real UK made and not those labelled "foreign made" ones). Stick them in and warm them up for 30~50hrs. You'll be surprised.

Provided that your amp uses good quality parts and components the outcome will be stunning!

Quest


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