Hi! This is my third post, so please read cautiously as it may contain serious faults. Previously, I wrote that generally I prefer my tube setup with a simply John Kenny Ciunas DAC vs HDVD-800 except for hd-audio and classical music. Recently, I upgraded my dac to the Calyx 24/192 (yes, I know there is their Femto product for $7k, but I like to go slowly step-by-step). Generally, this dac resolves more detail and at the same time less harsh. The difference between the warm sound of my diy tube amp and the HDVD-800 shrank considerably. Basically, I know almost exclusively listen to the HDVD-800 and I dont find it analytical or fatiguing anymore. I thought this may be interesting for those looking for the best amp/dac combo as one view from an HD800 owner.
I borrowed Nordost Valhalla in an attempt to go symmetric - I dont have the CH800S or other symmetric headphone cable, yet, so I use the stock jack one -, but found no difference from the Eccose Composer RCA or a cheap Audioquest Niagara RCA like copy from China or a simple studio XLR. I will return the Valhalla and maybe its not the cable's fault, but probably my system, especially without symmetric connection to the headphone, is not good enough to reveal the difference. I decided to ask a local specialist to make a very good quality XLR cable and also a headphone cable. Maybe this is a risky choice, but his XLR cables are selling for €800 used - €1200 new - and he says its not a big deal to make a better cable than the stock one, but its a challenge to make the best out of it. I will get it in January-February 2015, so looking forward, whether cables matter or not - at least in my system.
Please feel free, if you have good or bad experience with the balanced mode or with aftermarket cables. As far as I read, Cardas and some others are regarded mostly as an upgrade, but the stock cable is also generally said to be good.