1 pair) 6CA7 Sylvania Big Bottle 1970”s used/good faded printing – same build

1 tube) 77.0ma Gm=9450

1 tube) 80.5ma Gm=9300 rebranded RCA

Good mA range 70-90ma

Recommended for

– AudioPrism Debut II

– Lectron JH50 power amp

– Matchless (35 watt Class A)

– Woo Audio

– Marshall 1987 head

– Marshall JMC 2000 DSL 100 watt 2003

– Marshall 50 watt Bass 1972 (model 1986)