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(!!!!!) (Recommended Single) M8137=CV4004=12AX7 Mullard branded Philips box plates NOS 1966 (Gm=1500/1400 and 1.0/0.8mA)

(!!!!!) (Recommended Single) M8137=CV4004=12AX7 Mullard branded Philips box plates NOS 1966 (Gm=1500/1400 and 1.0/0.8mA)

$ 188.88
(!!!!) (Best Overall Single) M8137=Cv4004=12AX7 Mullard box plates branded Philips NOS 1966 (Gm=1600/1700) (1.3/1.3ma) 1-2% section balance

(!!!!) (Best Overall Single) M8137=Cv4004=12AX7 Mullard box plates branded Philips NOS 1966 (Gm=1600/1700) (1.3/1.3ma) 1-2% section balance

$ 229.99
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