(!!!) (Recommended Single) 5881 Tungsol NOS 1954 (77ma)

1 tube) 5881 Tungsol NOS 1954

77ma

Gm=5950

Tested on Amplitrex

Good Ma range 55-70ma

Good Gm = 4500-6000

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