(!!!) (Best Single 1966) 12AX7A RCA ribbed plates NOS 1966 (Gm=1800/1600, 1.3/1.0ma) (best tone, 2nd best to Mullard)

1 low noise tube) 12AX7A RCA ribbed plates NOS 1966 (BG) Gm=1800 (1.3ma) Gm=1600 (1.0ma) best midrange tone creamy smooth top end 2nd best to Mullard in V1 position     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