I think some cables are just a little too expensive.

Not worthy of these speakers
https://backesmueller.de/en/products/line-serie/bm-line-100.html

They are entry level cables.

65k there are much better cables out there for much less e.g. PURIST.

I passively bi-amped a pair of Nautilus 802’s and I ran Transparent Super’s to the mids and tweets and Transparent Plus to the woofers. Used 2 Pass Aleph 5 60W pure and I mean PURE class A single ended. Problem was the channel powering the woofers were doing 90% of the work. So I’d swap them out once a month. To be honest it really wasn’t worth the trouble and I’ve got 2 amps drawing 300 watts idle.(to be honest, I still don’t think bi-wiring does all that much, if anything) So yeah I used more moderately priced Transparent cables. I was really loyal to one shop and that’s what they carried. I bought a used Transparent AES/EBU for $500. My DAC and transport(Micromega) had 3 possible interfaces. So I found the cheapest coaxial, and I mean cheap. No shield and the diameter of a Q-tip. Plugged both of them in. The $500 110 ohm vs. a coax Best Buy would be embarrassed to sell. I spent 2 hours bouncing back and forth and couldn’t tell the difference! I would bet none of your guys would either. So either Micromega pulled some stunt to save money on the receivers or... I used to think there’s a lot of speaker companies. Now the audiophile world is inundated. And more than any other product we deal with, more money doesn’t mean better sound. Just my opinion.

Hey tablejocky. Are those self powered speakers. If so, yeah you could do without $65,000 cables. I've never heard of them. How much would a pair set you back? Or is it if you have to ask...