(!!!) (Best Pair) 6BQ7A GE black plates "U" getter NOS 1957 (12.8/12.2ma and 11.0/11.6ma) (Highest mA and Gm)
$44.44
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1 low noise pair) 6BQ7A GE black plates "U" NOS 1957 1 tube) 12.8/12.2ma Gm=8000/7000 1 tube) 11.0/11.6ma Gm=7700/7800 Tested on Amplitrex Good Ma range 6-8ma Good Gm = 6000 (also see 6BZ7 and 6BK7B)- Modwright Transporter- Schiit Lyr amp 2011- Don Allen- Donald North Audio (DNA) Stratus
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