(!!!!) (Recommended used pair) 5881 Tungsol used/good 1960's (63.2ma and 66ma)

1 pair) 5881 Tungsol used/good 1960's same build in white boxes

1 tube) 63.2ma Gm=5100 branded RCA 1965

1 tube) 66.0ma Gm=5200 branded Raytheon 1960's - taller bottle

Good used mA range 55-65ma

Good used Gm range 5000-5500

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