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(!!!!) (Best Siemens Pair) 12AT7=ECC81 Siemens Halske Germany branded "SATOR" NOS 1964 (9.0/9.3ma and 9.2/10ma) (close Gm)
(!!!!) (Best Siemens Pair) 12AT7=ECC81 Siemens Halske Germany branded "SATOR" NOS 1964 (9.0/9.3ma and 9.2/10ma) (close Gm)
By Tube World
$ 169.99
1 low noise pair) 12AT7=ECC81 Siemens Halske Germany branded "SATOR" NOS 1964
1 tube) 9.0/9.3ma Gm=5300/5500
1 tube) 9.2/10.0ma Gm=5400/5500
(very quiet, high Gm, very good section balance, good detail, more neutral, good value)
Amplitrex Test Data:
Good Ma range 7-10ma
Good Gm range 4500-5500
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 (Best Siemens Pair) 12AT7=ECC81 Siemens Halske Germany branded "SATOR" NOS 1964 (9.0/9.3ma and 9.2/10ma) (close Gm) "Pin It")