(!!) 5V4GA RCA NOS gray plates 1967 (66/40 and 68/40)
By Tube World
$ 41.99
5V4GA RCA NOS gray plates 1967 (BT)
66/40
68/40
tested on TV-7
40 = 65%
recommended for:
Fi X
Dr. Z Z-28
Dr. Z M12
Goodsell Super 17
Transporter modded by Modwright
Peter Millett headphone amp using 307A's
Fender Champ 1973
See more: vacuum tube