(!!!) (Best Overall Pair) 6ES8=ECC189 Mullard UK NOS 1965 rebranded (High Ma and Gm)
1 low noise pair) 6ES8=ECC189 Mullard UK NOS 1965 rebranded same build
1 tube) 23/26ma Gm=17,000/18,000 (branded GE)
1 tube) 21/27ma Gm=17,000/19,700 (branded Zenith)
matched on Amplitrex
Good Ma = 12-15ma
Good Gm = 12,000
6ES8 has electrical ratings very similar to a 6DJ8=ECC88, 6ES8 have high Gm, low internal capacitances and low noise)
(6ES8 were originally designed for used as cascode VHF amplifiers)
(Vplate max=130V, Iplate max=22ma, Plate Dissipation max= 1.8watts)
(Typical Operation Class A Amp: Vplate=90V, Vgrid=-1.2V, Iplate=15ma, Gm=12500)
"Thank you, I received the Telefunken ECC189 tubes today. Well packaged, and beautiful sounding valves.
Many Thanks, John"