(!) (BEST VALUE PAIR) EL84 Brimar England NOS 1962 (67ma and 66ma) (recommended for FIXED-BIAS amp only due to high current)1 Matched Pair) EL84 Brimar UK 1962 original boxes 1 tube) 67ma, Gm=12,700 slight glass tilt 1 tube) 66ma, Gm=12,750 recommended for "FIXED BIAS" amp only due to high current (ma) DO NOT BUY THIS PAIR IF YOU HAVE AN "AUTO BIAS" or "SELF BIAS" AMP Matched on Amplitrex EL84 sweet spot is 45ma Recommended For: BLACKHEART BH5H Bad Cat Black Cat 2003 Shindo Montille RM10 Gibson GA 5 Skylark 1966 VOX Kustom