(!!!!) (Recommended Quad) 6HA5=6HM5=EC900 Amperex Holland "Globe Logo" NOS in white boxes 1971 (9.8/9.8/10.0/10.2ma)

1 matched quad) 6HA5 Amperex Holland "Globe Logo" NOS in white boxes 1971

1 tube) 9.8ma Gm=12,700

1 tube) 9.8ma Gm=12,900

1 tube) 10.0ma Gm=13,000

1 tube) 10.2ma Gm=12,600

Matched on Amplitrex

Good Ma range 10-11ma

Good Gm range 12-14,000

- Wright Sound Model 11 preamp (phono stage)
- Fisher 500C
- Milbert TC-4R Crossover