(!) (SINGLE) 6BZ7=6BQ7A GE GM Delco “”U”” getter NOS 1950”s (11.6/10ma)

1 low noise tube) 6BZ7=6BQ7A GE GM Delco “”U”” getter NOS 1950”s

1 section) 11.6ma Gm=7100

1 section) 10.0ma Gm=6600

Tested on Amplitrex

Good Ma range 6-8ma

Good Gm = 6000

(also see 6BQ7A and 6BK7B)

– Modwright Transporter
– Schiit Lyr amp 2011
– Don Allen
– Donald North Audio (DNA) Stratus