(!!!) (Recommended Quad) 8D8=EF86 Brimar UK quad mica NOS 1961 (2.8/3.0/3.0/3.0ma) 1-3% matched

1 matched quad) 8D8=EF86 Brimar UK quad mica NOS 1961 in white boxes 1 tube) 2.8ma Gm=1900 1 tube) 3.0ma Gm=1800 1 tube) 3.0ma Gm=1800 1 tube) 3.0ma Gm=1900   Tested on Amplitrex Vplate=250V Vscreen=140V Vgrid=-2V Good Ma = 3ma Good Gm=1800-2200   Recommended for - Vox AC10, AC30- Dr. Z Z-28- Vox AC15HTVH head (install all Mullard tubes: EF86, 12AX7, EZ81, EL84)- Eastern Electric M520- Matchless C-30, SC30- Bottlehead  - VOX AC30 Heritage- Microtek UM92.1 mic [ MEYER SOUND LABS (Berkeley, CA) ]- U67- Luxman MQ-68C