(!!!!!) (Best Single) ECC83=12AX7 Telefunken Germany <> bottom smooth plates NOS 1969 (1.3/1.1ma and Gm=1800/1600)

1 low noise tube) ECC83=12AX7 Telefunken Germany <> bottom smooth plates NOS (B3009101=1969) 1 section) 1.3ma Gm=1800 1 section) 1.1ma Gm=1600 Good NOS Ma = 1.0+ Good NOS Gm = 1600+ Recommended for: Se Electronics Z5600a II Tube Condenser mic Veloce Audio Line Stage and Phono Amp Nagra PL-L preamp VTL 7.5 preamp MFA preamp Orange amps Conrad Johnson Premier 15 phono preamp Pilot SP-210 preamp Jadis preamp Aesthetix Rhea, Io, Calypso George Wright phono THD Plexi-50 MXL V69 Mogami Edition Tubetech CL1B Audio Thrills phono AKG mic Bellari VP130 phono