JMF stereo 6002 amp with their preamp to my ears were much preferred to the CH M1 units on the Estelon ceramic driver speakers.albeit at different times. . In fact I d say the JMF to ears are one of the most musically neutral and organic amps currently being produced. However I think it might be speaker brand dependent, as CH matches really well with the Steinheim & Rockport speakers. I liked the sonics of the CH DAC C1-1.2 quite a bit though.