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(!!!) (Best Single) 7247=12DW7 Mullard England NOS 1963 (1.9ma/11.8ma) (High Ma and Gm)

(!!!) (Best Single) 7247=12DW7 Mullard England NOS 1963 (1.9ma/11.8ma) (High Ma and Gm)

$ 79.99

1 tube) 7247=12DW7 Mullard NOS 1963 original box - best single

12AX7 Section = 1.9ma Gm=2100

12AU7 Section = 11.8ma Gm=2300 

 

 

Tested on Amplitrex

12AX7 Section Good = 1.0-1.2ma Gm=1600

12AU7 Section Good = 8-10ma Gm=1800-2200

  

Recommended for:

- Fisher 400 CX-2

- Eico 2510 amp

- Eico ST-70 preamp 1961

- Ampeg SVT 1974, VT40

- Quicksilver silver sixty mono amps

- SWART amp (vibroto/tremolo)

- SWART Atom (2012)

- Eico 2036 amp

- Li'l Dawg Amps

See more: vacuum tube
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