(!!!!) (slightly microphonic single) ECC82=12AU7 Telefunken Diamond Bottom smooth plates NOS 1961 very good printing (10.0/10.8ma) (high Gm) Title: 12AU7 Telefunken 1961

1 low noise slightly microphonic single) ECC82=12AU7 Telefunken Diamond Bottom smooth plates NOS very good printing (B0211125=1961) – microphonic ring when you tap on the tube

1 section) 10.0ma Gm=2400

1 section) 10.8ma Gm=2500

Good Ma range 8-10ma

Good Gm range 1800-2200