Whilst I'm saving for a phono stage I am planning ahead for future purchases and how to incorporate them into the home in a family-friendly fashion. Specifically I am thinking of the location of Proprius power amps in relation to the pre-amp and speakers.

Is it generally considered better to locate the Proprius next to, or close to, the speakers, with the attendant short speaker cable run and longer interconnects between the pre and power amps?  Alternatively would it be more sensible to have the pre and power amps close to each other and have a longer speaker cable run?

In case it is relevant, the distance between the pre-amp and the speakers will be two metres to one speaker and four to five metres to the second speaker. (The pre-amp will be located in a corner of the room and the speakers more or less central to the seating position.)  No mains cables will be in the area between the pre-amp and speakers.

Thank you.

I think Graham is right. I have my Proprius amps next to each of my speakers (I lifted them off the carpet on small platforms) and use long balanced feed from the Majestic with very short speaker cables. It sounds great to me and may be the best fit for your domestic situation, unless I have misunderstood.

CuSat50-R3 of any length uses the anti-phase but has no ferrites. Libran of any length uses both phases (so carries forward common mode distortion) and also has no ferrites. So even ultra-short lengths of either of these interconnects is unlikely to offset no ferrite EMI-suppression and carrying forward common mode distortion on the standard phase of the Libran.

Whether you could actually hear a difference in purity between the cable choices in another matter entirely. You'd need to optimise the rest of the system before being able to hear any difference at all probably.

For balanced connections between the Majestic and Proprius, reading the the "Lautus page" on this website recommends to use the Libran cables for balanced connections. Of course, you could always make use of the loan scheme and see which you prefer?

Unless you placed a special order on the Majestic (Variable line output on the RCA connectors), it makes more sense to me to use the TRS balanced outputs, using a balanced cable to the balanced input on the Proprius?

For professional applications and/or really long cable runs of many meters or more, it is generally accepted that balanced interconnects (therefore Libran) is the best solution. Also, the Lautus is somewhat an "experimental" product whose benefits were deemed to be falsely advertised pseudoscience (by Advertising Standards Agency), hence why much of the explanatory theory on the product page had to be removed. I'm willing to trust the logic/calculation behind ferrite placement within the sheath however.

If I had wanted the shortest cables possible, I may have selected CuSat50-R3 over the Libran, for reasons explained before but it's a close call. My current Lautus-R3 allows flexibility for equipment positioning.

As for Spatia length, unless it's very very long (many meters), I doubt there would be any audible difference. It's shielded and the magnitude of the signal is much higher than line-level so far less susceptible to EMI, in my opinion.