Hi Wig
'Sorry for taking so long to respond, but I have been away on business.
I did get the balanced inputs. My VAC 160 was a show demo that had the bal input option and MC phono option included. I was fortunate as that is the configuration that I would have pursued if I had to order one.
I wanted the Bal inputs to pair up with my ARC DAC8. My thinking was that ARC seems to have a design bias in favor of Bal inputs when possible, so I wanted to optimize system synergy and get the most out of the DAC8. I have tried both inputs with it and prefer the Bal Input.
I would say the difference is noticeable to my ear, but not dramatic, rather one of degrees. I find the combination of DAC8 with Bal Input to be a bit fuller dimensionally, smoother flowing, and more analog/ life-like, and less edgy or biting while still displaying very realistic detail, instrument separation, tone and such. A couple of examples to illustrate: It is very good at say, portraying massed strings naturally like you would hear in a Mozart concert in a good venue like the Kaufman Center in Kansas City vice congealing the sound into sort of a compressed presentation that is present with some systems. Similarly, you can hear and appreciate the foundation and distinction of the bass in a Ray Brown or Charles Mingus track, as if you were in a small, intimate jazz club vice the sometimes fuzzy or one note bass you might hear with less capable system synergy. In sum, more natural to me.
To me, it seems more like live, un-amplified acoustic music that I experience at live events with less of any digital artifact.
Also, and a bit surprising to me, the difference between Bal and SE is more noticeable in favor of the Bal input at the lower volume levels that I prefer for late night listening - not sure why this would be so, but it is my perception.
I can't say whether my experience would translate generally to all systems but that is what I hear in mine with DAC8, VAC 160 int amp and Bal input. I believe the list price of the Bal option for the VAC 160 is about 1K. Whether that is worth it, is a personal decision, but it seems to pass for reasonable in the world of high end audio prices.
Hope this helps.
Jim