Again as with prior comment I went from the K5xe (actually the K6xe version to the monoblocks. Most of my listening is Jazz and classical...using a D1xe with Rockport speakers. The most immediate impression of the MX-R was listening at lower levels...reduced noice...and a sense of greater dynamics. Its very musical and easy to listen to...I suspect you would find it a worth while improvement over the K1xe...
John
John