(!!!!) (Best Pair #1) ECC83=12AX7 Tungsram Hungary branded IEC Mullard NOS 1982 (1.3/1.6ma and 1.4/1.6ma) 1-3% matched (high Gm)

1 low noise pair) ECC83=12AX7 Tungsram Hungary branded IEC Mullard NOS 1982  1% matched 1 tube) Gm=1800/2000 (1.3/1.6ma)  faded printing - on right 1 tube) Gm=1900/2100 (1.4/1.6ma)   Recommended for - Vincent CD-S6 CD Player- Dumble Overdrive Special clone amp- Fender Twin Reverb 1964, 1966, 1990- Two-Rock Custom Reverb Signature V1 - Fender Deluxe Reverb 1964, 1966- UESUGI TAE-4 phono 2008 - Fender Princeton Reverb- Fender Super 6 Reverb 1970's- VOX AC15- Fender '64 Vibroverb- SUPRO model # 1616T- Conrad Johnson MV60SE- Shanling CD-S100SE HDCD player- Universal 175- Teletronix LA-2A Compressor/Limiter- Behringer T1954 Ultrafex- Conrad Johnson MV60 2002- McIntosh C8 phono