(!!!!) (Recommended Pair) 5842=417A Amperex "PQ" USA Nickel Pins "O" getter halo NOS 1985 (35ma and 37ma)1 pair) 5842=417A Amperex "PQ" USA Nickel Pins "O" getter halo NOS 1985 orange printing 1 tube) 35ma Gm=27,400 1 tube) 37ma Gm=27,900 Matched on Amplitrex Good Ma range NOS 20 30ma Good Gm range NOS 20,000 30,000 Recommended for: LAMM LP2 phono Wavelength Signature 45 2004 Robert Koda Takumi K 70 power amp Psvane T 417 Reference Tube Pre Amplifier Supratek phono