Real experience - Balanced or Unbalanced between Luxman Pre & Power Amps

I'll bite.

Reiterating Ralph Karsten's (atmasphere) opinions, your equipment should follow AES standards for Balanced operation (that you are using Luxman equipment, I 'think' you should be in the clear, but having no wiring diagrams, I couldn't say for sure.

That being said,

I bought a set of Mogami XLR cables from Ralph, when I bought his amps and preamps (tubes). I followed my favorite dealers recommendation and tried some AQ XLR cables (non DBS). To my ears, it, too, didn't yield a significant difference.

I will say,

I have used AQ cables for my system after I heard the William Tell speaker cables. They were truly mindblowing in the sound difference from my GO-4's. So, I think that if I were to move up the line to a 'higher' cable, I might be able to hear a difference in XLR cables.

Is that worth the cost?

I love my system as it is, and am in no hurry to spend more. 

HTH 

Bob

Input impedance LINE : 45 kΩ/1 kHz
BAL LINE : 90 kΩ/1 kHz
LINE → BAL LINE : 27 kΩ/1 kHz
BAL LINE → LINE : 54 kΩ/1 kHz
Output impedance LINE : 90 Ω/1 kHz
BAL LINE : 180 Ω/1 kHz

But that is of no real concern. It's quite common for fully balanced audio gear to use another approach. You still gain the benefit of CMRR.

Thanks all and I appreciate all the input.  I'll find a local store that has some cardas options for me to test.