(!!!) (Best Single 1953) 12AX7 GE gray ribbed plates "D" getter 1953 like new (Gm=1600/1600 and 1.1/1.0ma) (1st version)

1 low noise tube) 12AX7 GE glossy gray ribbed plates "D" getter tack welded to plate post 1953 like new - 1st version GE made

Gm=1600 (1.1ma)

Gm=1600 (1.0ma)
 

NOS Gm range 1500-1600+

NOS mA 1.0mA+

(warm musical presence, balanced and sweet)

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