(!!) 12AU7A CBS black plates NOS 1960 era (9.5/11.8ma)

1 low noise tube) 12AU7A CBS black plates NOS 1960 era faded printing

9.5ma Gm=1800

11.8ma Gm=2200 

Good Ma range 8-10ma

Good Gm range 1800-2200

(also consider subs 5814A and 6189 RCA)

- 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

- Fender Blues Deville