1 low noise tube) JAN-JHS-12AU7 Sylvania "black plates" with "D" getter used/mis-matched sections 1955 era in white box

copper grid posts

"D" getter halo spot-welded to plate post

7.6ma Gm=1700

12ma Gm=2400 

• Low Noise and not microphonic

Recommended 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