Both Cambridge int amp and streamer are endorsed by Stereophile so there is no need for concern. I stand by my previous statement, i.e., at this point, R26 sounds good but performs at most as well as MXN10 internal DAC. Both are neutral but I expect the R26, with its r2r topology, to sweeten / smooth the midrange / treble better than the ESS-based delta sigma DAC in MXN10 but it doesn't.
Give Maria Duenas's II. Larghetto Beethoven Violin Concerto in D major, Op. 61, in her 'Beethoven and Beyond' album a listen (24/96 in Qobus) and let me know how you feel about the violin timbre.