(!!!) (Recommended Black Plates) 12AU7A Westinghouse black plates 1960 era rebranded United 1981 "D" getter halo (8.4/9.8ma) (similar to RCA black plates)

1 low noise tube) 12AU7A Westinghouse black plates 1960 era rebranded United 1981 "D" getter halo in white box

8.4ma Gm=1800

9.8ma Gm=2000

Good Ma = 8-10ma

Good Gm range 1800-2200

Matched on Amplitrex

best for:

- Cayin MT-35 Integrated amp
- Rogue Audio Cronus
- Rogue audio Perseus + Rogue audio stereo 90,
- Sun Audio 1000
- CJ PV10
- VTL 7.5 Series II
- Ampeg
- Aguilar DB750 driver tube
- Odyssey Kandela preamp
- David Berning ZOTL Pre One Audio Preamplifier