Tube Amp for GR Research LS-6

Liquidity can be found in the MFA products. The M-200 monoblocks should do very well. They also are easy maintenance in case of an output tube failure as they just blow an easy to change plate fuse. The AR VT-200 could do well, but with Audio Research a tube failure can require resistor replacement or even trace repair on the boards. The Rogue Zeus may be a best bet in the $4k budget too. With any tube amp, trying some NOS tubes in the front end can pay big benefits in dialing in just what you are seeking. I recently tried that on my AR VTM-200's and was amazed. If, low maintenance is a top priority, by all means try some lush tube preamps first (MFA Luminesence, Thor, Tube Research. AR Reference 2) and see if all the blame is really your SS amps. Even your cabling can play a role, so if you just need a slight change, that may do enough if you like the basic characteristics of your current set-up. JAY