(!!!!) (Single) 6BK7B GE gray plates NOS “”U”” getter 1963 (6.2/5.4ma)

1 low noise tube) 6BK7B GE gray plates NOS “”U”” getter 1963

6.2ma Gm=5200

5.4ma Gm=5100

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

(6BK7B is a very good substitute for the 6N1P)

(also see 6BQ7A and 6BZ7, you can sub a 6BK7B for a 6DJ8)
(6.3 @ 450ma, Vplate max = 300V)