(!!!!) (Best Value Pair 1965 era) 12AX7=ECC83 Philips Miniwatt Holland like new 1964-1965 era (1.3/1.2ma and 1.1/1.2ma)

1 low noise tube) 12AX7=ECC83 Philips Miniwatt Holland like new "o" getter halo in white boxes 1 tube) 1.1/1.2ma Gm=1550/1600 (165-delta4F5) faded printing in white box 1 tube) 1.3/1.2ma Gm=1700/1600 (165 series) 1965 era faded date code   NOS mA range 1.0ma+  NOS Gm range 1600+    Recommended for - EAR 834P- EAR 864- Aestetix Rhea phono- Aestetix Calypso, Io phono- Art Audio phono- Audio Research linestage - Shindo linestage- Jolida 1000 CD player- CAT SL-1 Signature Mark III preamp- Fender Pro Reverb 1967- Pathos Acoustics T.T. Hybrid Integrated amp (INPOL)- Belari 129 phono - Art Audio MPA Gold pre- Fender Tremolux 1963- Jolida