(!!!) 12AX7 Sylvania 1960-1965 used/tests like new small mica flake inside tube (Gm=2400/2800)

Category: SKU: TOY390251

$12.90 $42.99

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1 low noise tube) 12AX7 Sylvania 1960-1965 used/tests like new small mica flake inside tube in white box

Gm=2400 (1.8ma)

Gm=2800 (2.2ma)

Good Gm = 1600+

Good Ma range = 1.0-1.2ma+

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