Mullard 6DJ8 ECC88 Vintage 1963 NOS GA2 Round Getter Vacuum Audio Tube

This Mullard 6DJ8 features a 1963 date code of "B3C4". Minimum transconductance (Gm) on the Amplitrex tester is 8.8 and NOS tubes typically test around 12.5. This tube tests at 14.5/12.4. Audio Preamp Tubes (12AX7, 12AY7, 6SN7, 6DJ8, etc).