Though I haven't tried my K701s with a nice solid state amp such as the CanAmp, dyanlo, CKIII or B22, I love them with my WA6 for classical music, acoustic jazz and some progressive rock stuff. It gives a detailed, dynamic sound with a certain ethereal softness that makes those recordings sound gorgeous. Euphonic? maybe; enjoyable? ABSOLUTELY!
The SR-225 (not i) + WA6 is also great. I tend to use that for more raunchy stuff such as blues, classic rock, hard rock, etc: Roaring guitars, slamming drums, screaming solos, howling vocals. Lovely combo.
Of course, these are just my perceptions and preferences, you, as others, might not like the combos: such is life!