(!!!!!) (BEST PHONO PAIR) ECC83=12AX7 Siemens Halske Germany branded SONOTONE NOS 1962 (1.6/2.0ma and 1.6/1.7ma) 1-3% matched (Aesthetix, EAR, Lamm, VTL, Jadis, Nagra)

1 low noise matched pair) ECC83=12AX7 Siemens Halske Germany branded SONOTONE NOS 1962 1-2% matched (162 series) 1 tube) Gm=2000/2100 (1.6/2.0ma) 1 tube) Gm=2000/2000 (1.6/1.7ma)   Recommended for - PHONO STAGES (specifically) Nagra PL-L preamp VTL 7.5 preamp Hagerman Cornet3  Lamm Industries ML3 Signature mono amps Conrad Johnson Premier 15 phono preamp Jadis Aesthetix Diva Audio M7 preamp EAR 834P Se Electronics Z5600a II Tube Condenser mic Veloce Audio Line Stage and Phono Amp MFA preamp Orange amps Pilot SP-210 preamp Jadis preamp George Wright phono THD Plexi-50 MXL V69 Mogami Edition Tubetech CL1B Audio Thrills phono AKG mic Bellari VP130 phono