(!!!!!) (Best Pair 1961-1963) 12AX7=ECC83 Philips Miniwatt Holland NOS and like new 1961-1963 (1.1/1.2ma and 1.2/1.2ma) 1-3% matched

1 low noise pair) 12AX7=ECC83 Philips Miniwatt Holland ribbed plates same build 1 tube) 1.1/1.2ma Gm=1600/1700 (like new - 1961) large "O" getter halo 1961 1 tube) 1.2/1.2ma Gm=1700/1600 (NOS - 1963) small "o" getter halo 1963   Good NOS Ma = 1ma+ Good NOS Gm = 1600+   - sweet sounding 12AX7   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