"Budget" means different things to different folks but, if $2000 or so (depending upon custom features such as dual volume controls) is reasonable, a K&K Audio Active Linestage can be built new with Lundahl input, output and power trannies and beautiful Seiden stepped volume control(s). Uses a pair of Soviet military 6N6P tubes that remain dirt cheap, so re-tubing will not hurt at all. Very transparent, dead quiet (the quietest pre I've ever had) and, in my rig, topped sonically only by a much costlier (but not fully balanced) Audio Note. It smokes the top line balanced (c-core) Prometheus TVC in my system.