The method I am about to share involves doubling of interconnects. The inspiration for this was the experience of consistently obtaining superior performance from an audio system by doubling speaker cables. By “doubling” I do not mean shotgun speaker cables, but a literal parallel arrangement, wherein two pair are laid atop of each other, as it were, with all connections parallel. That also is a “do at your own risk” activity; one mistake in crossing over a connection and you can blow up an amp. I always check connections three times before turning on a new system, and I suggest this caution for anyone, especially those who are trying something new, have a tendency to be hasty, and/or have limited experience.
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I discussed this method extensively with some industry insiders, including the two cable companies referenced below. In all my discussions there were two potential hazards, concerns that were shared First, that the output of the source component needs to be sufficient to drive the doubled interconnects and, second, that the doubling of interconnects should be avoided between active preamps and amplifiers. Regarding the first concern about the output being sufficient to drive the doubled interconnects, there are some designs in DACs that do not use opamps and do not have nearly as high voltage output as other DACs. The doubling of interconnects is seen by the source component as though driving interconnects twice the length and some esoteric designs, such as some NOS (Non-Oversampling) DACs, may not handle it well. Though I have no experience with the Schroeder Method and portable DACs, I would think investigation as to compatibility would be the order of the day.
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Building hundreds of systems, over 30 years of being a hobbyist, and 12 years of reviewing has taught me that total gauge is perhaps the most important aspect of a cable’s performance, whether power cord or signal cable, and the heavier the gauge, the better. This is not to imply that conductor material is not important. Based on those results, as well as my experiments with doubling of speaker cables, I wondered what the potential benefit to the sound might be for doubling of interconnects. Most manufacturers of cables do not seem terribly interested, or convinced, of the efficacy of heavier gauge interconnects. Frankly, this strikes me as a neglected area of system design and implementation by industry insiders and hobbyists.
