Considering that your musical preference is jazz, some classical and some rock. I believe that the Graaf GM200 (200 watts otl ocl tube amp) this is a very refined italian amp which sounds exquisite with jazz and classical, also pretty nice with rock. I have heard many tube amps ,audio research, bat, vtl, airtight, quad. The Graaf is very musical, quiet, warm sounding. It is worth a listen.