Quote Originally Posted by musicoverall
It's perhaps a poor term but I know what it means. ....
That's the problem. If it's "not harsh, brittle, sterile", then say that. Or say it's "sweet, clear, grain-free". Maybe you can also say, "it accurately reproduces instrument timbres and conveys spatial information convincingly".

"Musical" is a subjective, vague, and mealy-mouthed. Also, it is term often used by vinyl addicts and tube-heads to describe the benign -- but not uncertain -- filtering and distortion that these provide.