Stunning work as always.
Would be cool if you could also measure this (most likely BS) tweaked version:
View attachment 560956
DIY kit: Transform your Sony UBP‑X700 into a true high‑end 4K Ultra HD Blu‑ray™ player with a linear power supply and a toroidal transformer for enhanced audio and video performance.
www.rvolution.com
Oh no

Twice the price, and 2 hours of swapping components for nothing. Shame.
BS as you said, what can be improved when the digital output is perfect?
This conversion kit is a total joke and nothing but a gimmick.
To be clear right off the bat: creating a conversion kit like this obviously involves a fair amount of effort.
The chassis kit alone is complex and expensive to produce. Then there are the costs for the remote control, transformer, circuit boards, components, wiring, assembly, and soldering. On top of that, production runs are relatively small, meaning all those costs have to be spread across a limited number of units.
Viewed in that light, the kit isn't actually expensive—not at all.
But ultimately, it’s just a larger case with a built-in power supply—that’s really all there is to it.
The manufacturer is clearly targeting the audiophile community, specifically by including a transformer and a linear regulator board.
Yet, it remains a relatively simple power supply that merely feeds a single 12V voltage into the Sony board via an external adapter.
On the Sony board itself, the required voltages are generated using DC/DC switching regulators. Anyone with some technical knowledge knows that pairing a transformer with a linear regulator upstream is absolute nonsense and offers no benefit—hence the "gimmick" label.
A "wall-wart filter" (like the one from the DIY Audio Forum) placed before the original switching power supply would likely yield better results at a fraction of the cost.
Perhaps in the future, the company will offer a more "honest" version: a large case featuring a Mu-metal shielded section for the original power supply (or a high-quality Mean Well unit) combined with an effective wall-wart filter.
That should significantly lower the price while actually providing a superior solution.
But at the end of the day, it would still just be a conversion to a larger, more premium metal chassis with an internal power supply.