(!!!!!) (Best Holland Pair) 12AX7=ECC83 Philips Miniwatt Holland like new "O" getter halo 1961 (1.4/1.6ma and 1.4/1.5ma) (Highest mA and Gm) 1-2% matched

1 low noise pair) 12AX7=ECC83 Philips Miniwatt Holland like new "O" getter halo 1961 in white boxes  1 tube) Gm=1800/1900 (1.4/1.6ma) (delta1K4) 1 tube) Gm=1700/1900 (1.4/1.5ma) (delta1H2)    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