In my VAC Sig MkIIa preamp, I finally settled on Telefunken 12au7 ribbed plates and Siemen e88cc w/ wide getter support post.
The Siemens are my FAVORITE by far. It's very fast, transparent, 3D, great extension, great dynamics ... I'm constantly amazed how 2 little tubes can totally transform a system. Have some Siemen Cca in transit now from a reputable dealer so can't wait. Also using HiFi-Tuning Supreme fuses.
I noticed ARC is replacing the 6550 with KT120 in all their amps. I wonder if VAC is migrating in the same direction. In most circumstances, it's a drop in replacement without mod if there's room. I wonder if it's true with current VAC amps ... so far only heard POSITIVE comments on the KT120.
The Siemens are my FAVORITE by far. It's very fast, transparent, 3D, great extension, great dynamics ... I'm constantly amazed how 2 little tubes can totally transform a system. Have some Siemen Cca in transit now from a reputable dealer so can't wait. Also using HiFi-Tuning Supreme fuses.
I noticed ARC is replacing the 6550 with KT120 in all their amps. I wonder if VAC is migrating in the same direction. In most circumstances, it's a drop in replacement without mod if there's room. I wonder if it's true with current VAC amps ... so far only heard POSITIVE comments on the KT120.