(!!!!) (Best Single) CV181=ECC32 Mullard black base black plates NOS 1950's (6.6/6.3ma)
$ 399.99
1 low noise single tube) CV181=ECC32 Mullard black base black plates oval flat foil getter with dimple NOS 1950's in white box
1 section) 6.6ma Gm=2500
1 section) 6.3ma Gm=2350
Good Ma range 5.5 - 6.5ma
Good Gm = 2000-2300
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 (Best Single) CV181=ECC32 Mullard black base black plates NOS 1950's (6.6/6.3ma) "Pin It")