(!!) (Recommended Pair) ECL86=6GW8 Mullard UK NOS 1964 and 1973 same build (1.5/1.3ma and 31/30ma)

1 pair) ECL86=6GW8 Mullard UK NOS same build

1 tube) 1.5ma Gm=1900 (triode) 31ma Gm=9000 (pentode) branded Sylvania 1973

1 tube) 1.3ma Gm=1800 (triode) 30ma Gm=9650 (pentode) Mullard 1964

Tested on Amplitrex

NOS mA triode = 1.0-1.2ma+ and Gm=1500-1600

NOS mA pentode = 30-35ma+ Gm=9000-10,000

recommended for:

- Shindo Aurieges L linestage

- Headamp Aristaeus 2007
- Sennheiser Orpheus headphone amp
- TELEFUNKEN HYMNUS CONSOLE 1962
- Revox Model 40 Stereo amp made in Switzerland (by Willi Studer)
- Hammond M-100
- GRUNDIG SO 190 Ua1 CONSOLE 1962