(!!!!) (Recommended XF2 Pair) EL34 Mullard XF2 NOS (1 tube) double halo "O-O" (1 tube) single halo "O" 1967-1968 (90.5ma and 92.8ma)

1 matched pair) EL34 Mullard XF2 NOS 1967-1968 (1 tube) single halo (1 tube) double halo - same build 1 tube) 92.8ma Gm=11,850 branded VALVO (xf2-B7C1=1967) double halo "O-O" 1 tube) 90.5ma Gm=11,250 branded Telefunken (xf2-B8L2=1968) single halo "O"   Matched on Amplitrex: Vplate=265V Vscreen=250V Vgrid=-13.5V Good Ma range 75-90ma Good Gm range 10,000 - 11,000   Recommended for - Diezel Stereo Guitar Amplifier- CARR amplifiers- Marantz 2- Manley Snapper