i would call transparent, be specific about what you're connecting to what, and let them provide the answer. in my case, i have a rowland consumate preamp, and because jrdg strongly encourages the use of the balanced inputs due to the fully balanced circuit design, i got a pair of trsp bal.ref (w/mm tech) to connect my dac (m.lev 360s) to the preamp.
and it does sound very very good.
as for the (very) confusing trsp. model designations, it goes like this- 1.ultra 2.ref 3.ref xl 4. ref mm 5.opus.
simply state "current production" which implies all have "mm" technology. "old" trsp cable unfortunately is not as good as the new stuff imho. my wild guess/answer to your question- get ultra bal- current production.
and it does sound very very good.
as for the (very) confusing trsp. model designations, it goes like this- 1.ultra 2.ref 3.ref xl 4. ref mm 5.opus.
simply state "current production" which implies all have "mm" technology. "old" trsp cable unfortunately is not as good as the new stuff imho. my wild guess/answer to your question- get ultra bal- current production.