I received two cables to test. I used them on both my PS, and on my DAC. the results were pretty much the same, more noticeable on my DAC though.
The differences between the two are the terminations. The copper colored one pins are made with furukawa copper. The silver ones are chemically polished and treated, and silver plated 240um thick.
It's a little hard to discern the differences between the two. However, being extremely familiar with my rig, I could subtly tell the differences.
The silver plated terminations provide a slightly more detailed otientation of the music. Whereas the Furukawa copper terminations provided that typical copper sound. No extra fullness or bassy note, it just didn't sound as acute.
You can see by the picture how much larger it is than my stock cable on my DAC. HUGE difference. both in quality and size. That alone makes you feel like you made a worthwhile purchase.
The sonic gains are infact a much darker background and weighty-er notes. There's a noticeable difference in soundstage, but nothing immense in terms of width or overall. I did however like the layering in which the cable seemed to add stability to everything.
The best analogy I could come up with is imagine a flute player hitting a note and it sounds wavy, then slightly adjusts the mouthpiece and gets a smoooooth note. There wasn't a change in pitch or anything else, the note just smoothed out and has a more visceral sound to it.
I would recommend either of these cables. I've listened to a DIY cable about 4 months ago and it didn't have quite the same effect this one did. I'm unsure if it's from materials, insulation, or what, but this cable was definitely better. You can snag these up on eBay or here from Maniac, the same guy who sells the Keces DACs....great guy to do business with and awesome products for the money, for sure.