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(!!!!) (Best Pair #1) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded

(!!!!) (Best Pair #1) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (8.8/9.4ma and 8.8/9.5ma) 1-2% matched (same Gm)

$ 279.99
(!!!!) (Best Pair #2) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded

(!!!!) (Best Pair #2) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (8.4/9.0ma and 8.4/9.0ma) 1-3% matched

$ 249.99
(!!!!) (Best Pair #3) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded

(!!!!) (Best Pair #3) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (9.0/8.6ma and 8.8/9.0ma) 1-3% matched

$ 249.99
(!!!!) (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
(!!!!) (Single) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded

(!!!!) (Single) CV4003=12AU7=6189 Mullard UK NOS 1978 rebranded "6189 RTC" 1981 (9.8/8.6ma)

$ 119.99
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