(!!) 5751W1 Sylvania triple mica “”O”” getter halo used/good early 1960”s misbranded 12AX7WA (1.8/2.0ma)

1 low noise tube) 5751W1 Sylvania triple mica “”O”” getter halo used/good early 1960”s misbranded 12AX7WA in white box

1 section) 1.8ma Gm=1400

1 section) 2.0ma Gm=1500

Tested on Amplitrex

Vplate=250V

Vgrid=-2V

Good Ma = 2ma

Good Gm = 1500-1600

best for:

– Crate V30H
– Conrad Johnson PV12A + Premier 11A, Premier 8
– Conrad Johnson MV75A1 1983
– Jolida 1301 hybrid amplifier
– PEAVEY CLASSIC 30

– Genz Benz Streamliner 900 bass amp 2011-2012

– Mapletree Ear+ Purist HD
– Jolida CD-100 sub for 12AX7”s
– JADIS Defy 7 amp
– Jolida JD-9 phono preamp
– Fender Champion 600