Being a true Class A circuit, each 140 draws 500 watts from the wall at a minimum, and can spike a bit higher (so Kevin Hayes told me). My 140's sounded best plugged into 20 amp dedicated outlets. They are not going to suck current like a big solid-state amp, but you don't want them plugged into a power conditioner that could limit current, which is virtually all of them. I suggest dedicated outlets fed by a dedicated transformer.
Vac 140's worth adding balanced power conditioner?
I'm thinking about purchasing a power conditioner...like a running springs for my Vac 140's. I have read some good things from users. I now use NBS professional PC's and I wonder if I would gain a lower noise floor with a conditioner and would a conditioner be compatible with my NBS PC's....