I'm thrilled with a modified EAR 834P. I bought the base (non-chrome) version and had the tubes,caps and connectors upgraded. Cost me around $2250. I got the work done at The Analog Room in San Jose, CA. They made the recommendation. Brian is the owner and Scott is the Technical guy. May be worth a call. The website is woefully out of date but they are still doing a lot of high end business for Silicon Valley Execs. FYI - Brian and Scott are also the owners and developers of Wavestream Kinetics - a very high end line of tube based equipment.