(!!!!) (BEST XF4 Pair) EL34 Philips Mullard NOS XF4 1976-1979 (90ma and 91.5ma) (same Gm)

1 matched pair) EL34 Mullard branded Philips NOS 1976-1979 (same Gm) 1 tube) 90.0ma Gm=11,950 (xf4-B6D1=1979) 1 tube) 91.5ma Gm=11,950 (xf4-B6F2=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