(!!!!!) (Good Value Single) 12AU7=ECC82 Mullard UK long plates "O" getter halo used/good 1958 (9.0/8.8ma)

1 low noise tube)  12AU7=ECC82 Mullard UK long plates "O" getter halo used/good 1958 (k61-B8H=1958)  

1 section) 9.0ma Gm=1700

1 section) 8.8ma Gm=1650

Tested on Amplitrex

Good used mA range 7-10mA

Good used Gm range 1600-1800

- Best sounding 12AU7; most 3D textured mids, good bass, smooth and effortless sound, very musical