Well low impedance loudspeakers (at treble frequencies) are the most sensitive to high loop inductance.They are sensitive to L and R , not C ...
As to interconnects, I recommend that users of Shindo electronics stick to the use of cables with switchcraft terminations to match the jacks on Shindo gear. Some poo poo this idea as a marketing ploy, but I've heard JH express his frustration with broken jacks on several occasions and I suspect that there is some truth to the idea that many modern IC terminations may be too big for the stock Shindo jacks. If you've ever purchased vintage Shindo, you are probably familiar with the hollowed out barely functioning inputs.
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Yep. I think it is important to use IC's that fit properly. I've used four kinds of IC's now - Shindo, Harmonic Technology, Soundstrings, and phono IC's I can't recall. Any IC's like the Harmonic Tech that tighten (by rotating the jack housing) are potential problems because they are either too loose or it's easy to forget that they are tightened and to try to remove them and potentially damage the amp jack. More than once, I've worried that I've done just that (gotta stop drinking so much scotch while listening). The Soundstrings IC's fit too tight for the amps, so they are relegated to my Almarro amp.
What a bummer to damage the amp jacks over something as simple as IC's.