(!!!!) (Best GE Single) 6BK7B GE gray plates NOS "U" getter 1974 (8.0/8.8ma)

1 low noise tube) 6BK7B GE gray plates NOS "U" getter 1974 (NI)

8.0ma Gm=5900

8.8ma Gm=6500

- 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)