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Preamp tubes

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CV4003ˇ
 
(!!!!) (Recommended Pair) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded

(!!!!) (Recommended Pair) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (9.6/8.8ma and 9.4/9.0ma) 1-2% matched

$ 199.99
(!!!) (Single) CV4003=M8136=12AU7 Mullard branded Philips box plates NOS 1975 (8.8/8.2ma)

(!!!) (Single) CV4003=M8136=12AU7 Mullard branded Philips box plates NOS 1975 (8.8/8.2ma)

$ 139.99
(!!!!) (Recommended Single) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded

(!!!!) (Recommended Single) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (9.6/10.8mA)

$ 119.99
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