1 low noise tube) 12AU7WA Mullard branded Chelmer Valve used/good 1961 in white box

7.7ma Gm=1500

8.8ma Gm=1800

GOOD USED Ma range 7-9ma

GOOD USED Gm range 1600-1800

Recommended for

– Concert Fidelity CF-080LS Hybrid Line Stage Preamplifier
– Ampeg SVP-PRO Bass Preamp
– Velleman K4000 kit
– Audio Note CD2
– ROTH AUDIO MC4 MUSIC COCOON 2009
– Eastern Electric Minimax
– Hovland