None. I use ESL's, which require a series resistor for tuning the step-up transformer. So I removed the resistor and inserted Nichrome resistance wire, of the same total resistance, between the mono blocks and the speakers.
Essentially, I substituted the highest class resistor for a second class resistor, and have no 'cables' whatsoever. These non-existant cables are very transparent, I have to say.
Essentially, I substituted the highest class resistor for a second class resistor, and have no 'cables' whatsoever. These non-existant cables are very transparent, I have to say.