I am using a Chord Co. SilverPlus USB cable to good effect, and a Furutech F 63 (G) 1/4" to 3.5mm adapter.
The Furutech adapter sounds great, but is not designed to work with every 3.5mm male plug out there, which is kind of annoying, though it does work for me. Specifically, it is designed with an inset female jack, the 3.5mm male plug needs to have a very slim diameter body or it won't fit.
Furutech's own FT-735 (R) male 3.5mm plug fits perfectly of course, but others with a wider diameter body won't fit, even the smallest version of the ViaBlue T6s "small" is too big, as are the older versions of the Oyaide 3.5mm plugs.
The molded plastic body 3.5mm plug found standard on many headphones does fit in my experience, I have various folding "travel" headphones from Sennheiser, AKG, and Beyerdynamic, all of which have a stock 3.5mm plastic plug barrel that will fit the F 63 (G).
The Herus is a very fine sounding unit in my opinion, it will even do a more than credible job as a USB DAC in a high-end home stereo for those that have an older legacy DAC that lacks a USB input.
I use my Herus in the office with a Windows 7 laptop, i7 @ 2.9 GHz, 8Gb of RAM, running JRMC19. Superb sound and tiny footprint.
The Herus also works flawlessly with both a Mac mini home computer running Audirvana+, and the iPad2+CCK running either the stock Music app, or better yet the Onkyo HF player app for native hi-rez file support.
The Herus does a great job of sounding detailed and resolving, without ever getting into the analytical or etched/hyper detailed realm. It gets out of the way of the music and doesn't push the listener into dissection mode. Very dynamic, but not at the expense of portraying all leading edge and no decay.
I find the presentation to improve across the board when the Herus is coupled with an iFi Purifier, though that's only compatible with my computers, the iPad+CCK won't stay locked to the Herus for more than a second or two when using the Purifier.
The iPad+CCK+Purifier combo does not produce the iPad error message stating incompatibility due to excessive power requirements, however the Herus will not stay reliably locked to the source for more than a brief moment or two, and will reconnect/disconnect repeatedly as evidenced by it's LED switching between red and blue. This is not an issue with the W7 laptop, where all aspects of the sound are enhanced/refined when coupling the Purifier to the Herus. The Mac mini also benefits from the Purifier, though to a lesser extent than the W7 laptop.
Edited by MikeyFresh - 3/13/14 at 8:38pm