Sorry to burst your bubble but that ain't gonna happen, waaaaaaaaay better sound that is. Fact is when you reach a certain point, and everyone has a point that's called the point of diminishing returns, one has to ask themselves if they're willing to spend more money for small gains. There's an old saying that you can get 90% of really good audio for a reasonable cost but for really really great audio that comes from that last 10%, it's not gonna be cheap. And that pretty much sums up comparing the Superclock4 with the Ultraclock. I've had both in my Off-Ramp 3 and there's no doubt the Ultraclock is better, lower ground noise with deeper soundstage & more instrument seperation
but it's not waaaaay better and to justify the extra cost really depends on deep pockets and how bad you want that extra bit of performance. Hell the same can be said for an external power supply, in my case the Paul Hynes SR3-12, as far as was it worth the extra $$$? My ears say damn straight while my wallet says

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Cheers,
Robin