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Re: Where to get Mullard CV 4003

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If you like the Mullard sound, look for actual ECC82 Mullards OR pre-1980 CV4003s. The 12AU7 variants, including CV4003, 7316, 5963, ECC802s etc. are much MUCH easier to source than 12AX7 variants. Give Andy at Vintage Tube Services a call @ (616)454-3467; ask him about both NOS and lightly used 12AU7 types. I got a pair of 1950s longplate Mullard "shield logo" type ECC82 from him that were selected for total freedom from noise and microphonics (he refers to them as "super-linestage" grade)and had triode section balance of around 5% (!!) for about $20-$25 each; they were lightly used but test at 90%+ for cathode emission and transconductance (results verified by me, as stated by Andy on the tube boxes. Friends who have the Bottlehead report that TungSol longplate 12AU7s and both RCA 12AU7 & 12AU7A types sound great too. The Bottlehead is easy on tubes; a couple pair of used/good 12AU7s from Vintage will last over a decade....spend the $80-$120 you'll save by not buying a couple pairs of NOS 1980s CV4003s, on the CCS kit for the Bottlehead.


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