(!!!!) (Best Pair #1) 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