Indeed, capacitance can be problem as it can render certain amps unstable. At audio frequencies and for the cable lengths typically seen in audio applications it is best to see the cable as part of the circuit and not as a transmission line. An amp or a DAC from a reputable maker should support a variety of reasonably priced and standard cables. Again. Stick to simple and standard RCA cables or whatever balanced cable from Guitar Center or monoprice to hook your DAC to your amp. Make sure the connectors fit nicely (not too tight, not to loose) and that things are not corroded and fucked up. I try to avoid solid wire because it's a pain in the ass to deal with. Too fat and stiff cables are also a pain in the ass. Avoid $250,000.00 cables that have been submerged in succubus breast milk. Instead, use that cash to payoff your mortgage or invest in the S&P500 or take a vacation with the family. EDIT: Maybe upgrade your DAC or Amp or both for a fraction of that cash and still take the family on vacations somewhere.