Get a matched pair of WE new production 300B's at @ $450-495 NIB off ebay or here. The KR's are Nordost-like sterile in harmonics in upper mids, disproportionately load energy at the transient, and have a more void-like space around players. The WE's are rugged with 40,000 hour tube life. Its a no-brainer. If you do this, however, you should also consider at some point maximizing your input tube performance (for the harmonics) and have good AC (for dynamics), or you won't hear it all the We can offer.
