(!!) 12AU7A RCA clear top used/good 1960”s (7.4/8.6ma)

1 low noise tube) 12AU7A RCA clear top used/good 1960”s copper grid posts

7.4ma Gm=1600

8.6ma Gm=1800

Tested on Amplitrex

Good used Ma range 7-9ma

Good used Gm range 1600-1800

– the best sounding US made 12AU7A

– the 5814A RCA is also good from 1959-1975

– 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