(!!) (Best Pair) EL822 Mullard black plate NOS 1970-1973 (43.2ma and 44.4ma)
(!!) (Pair) EL822 Mullard black plate NOS 1973-1974 (40ma and 41ma)
(!!) EL822 Mullard black plate NOS 1974 (51ma)
(Recommended Pair) 6CH6=EL821 Brimar UK like new 1956 (35ma and 35.2ma)
6CH6=EL821 Brimar UK like new 1956 (2 in stock)
