(!!!) (Recommended Pair) JHY-6AK5 Hytron black plate NOS 1952 (5.8ma and 5.8ma)
(!!) (Set of 4) JHY-6AK5 Hytron black plate NOS 1952 (test between 6-8ma unmatched) (4 for $39.99)
(!!!!) (Recommended Pair) JHY-6AK5 Hytron black plate NOS 1952 (8.9ma and 9.3ma)
