Experience with Intona USB 2.0 Hi-Speed Isolator

Based upon some conversations about USB galvanic isolation, I purchased the Intona USB 2.0 Hi-Speed Isolator to potentially increase the SQ of my digital playback. I connected the Intona between an Exogal Comet Plus and modified Mac Mini (outboard PS). I used a 1M Morrow USB cable on the device side and a 0.5M Wireworld Ultraviolet USB on the host side. I burned in the assembly for 100 hours with music files. My first impression was an increased amount of low level detail and a deeper soundstage. However, this came at the cost of dynamics and drive. Music that I was very familiar with seemed to play at a slower, sluggish pace. I replaced the Ultraviolet with a 1M run of Wireworld Platinum Series 7 which helped a little (other reviews indicated that host cable was not a factor – but I clearly heard a difference between the two Wireworld's). I then swapped the Morrow and Wireworld with a slight step backward in dynamics.

Any comments/suggestion to improve the Intona experience would be greatly appreciated.  

BTW, the rest of my system is a Pass INT-60 integrated amplifier, Thiel 3.6 speakers all connected with Morrow Reference cable plugged into a PS Audio P10. Analog side is a VPI Prime with Soundsmith Zephyr MIMIC cart into an iFi phono.