When and what was your last significant equipment upgrade?

Purist Audio Neptune RCAs. It's almost like inserting a good tube pre-amp in the chain. I have all solid state electronics, but not cold sounding.

Grogan unfortunately you are probably right about that. Divorce only leaves a person room for inexpensive upgrades and a bottle of booze.

Forgot to say my Melco is running into my Bricasti. Bricasti straight to Bricasti M 28's. Devine...sublime

My previous best upgrade was to the deHavilland UltraVerve tube preamplifier. At the time I was a dealer for Art Audio, Joule Electra, Atmosphere and had pre amps from all the above. In the hopes of finding a less expensive preamp I ordered an UltraVerve from Kara Chaffee. Well I got more then I expected. That little $2500 pre out performed all the above. What an eye opener that was. 

I think that was in 2006.