1 tube) 5881 International Japan black plate NOS 1960's 

70ma

Gm=6300

 

Tested on Maxi-Matcher

(Vplate=325V, Vscreen=325V, Vgrid=-24V, triode connected)

(Good Current Range = 45-60ma)

 

Recommended for

- Pro Dawg (copy of 5E5A Circuit)
- Naylor SD60
- Fender Bassman RI 1956, 1959
- Fender Pro-Amp 1962
- Victoria Regal 2007
- Melody SP3 amp
- Heath W4AM mono amps
- Audio Note SORO linestage
- Mesa Boogie Mark 4
- Supratek
- CARR Rambler
- Line6 Spider Valve 112 (2007) Reinhold Bogner Amplification UK
- Clark Tyger 2011
- Clark Piedmont 2003