(!!!!) (BEST XF4 Pair) EL34 Philips Mullard NOS XF4 1976 (106ma and 107ma)

1 matched pair) EL34 Mullard branded Philips NOS 1976 1 tube) 106ma Gm=11,550 (xf4-B6G2=1976) 1 tube) 107ma Gm=11,900 (xf4-B6E2=1976) Matched on Amplitrex Good mA range 70-90ma Good Gm range 10,000-12,000 Recommended for - Univalve amp - Sonic Frontiers - VTL - Manley - Marantz 2 - Audio Sculpture Equilibre or Audio Matiere Equilibre - VOX AC50, AC100 Super DeLuxe - Mad Professor amp, Marshall 50 watt Plexi - Germino Fillmore Classic, VOX AC50, CJ Premier 4, Dynaco ST70 - Matchless Chieftain 1995 - Park 75 - Cornell Plexi 45/50 2003 - Two Rock - Hiwatt DR-103 1971 - Aestetix power supply - ASL aq1006-845 dt - 65AMPS Producer - Tophat Emplexador