I could have started this on the cables thread.....but....


After 24 hours of system operation with music playing, I have concluded that the factory umbilical cable between my Usher P307A chassis and power supply has been a "bottleneck" to my preamps performance...actually, the system performance. I decided to contact Brad, the owner and designer of Revelation Audio Labs, and he graciously designed and built an umbilical cable for me. So far, what I am hearing from this cable, are fireworks! More to come and thank you for your interest in what I have to say. Always, MrD.

mrdecibel

@grunge1000  I am so sorry you are a non-believer. The factory cable was not damaged, but a "throw in", based on keeping the cost down. I am now assuming every other preamp I have owned with an outboard power supply, without question, would have been "better" if this RAL cable was available. Power cables, imo, make a huge difference in performance, and generally, for the better. Even the connectors used sound different from one another, so system matching, known as synergy, is very important. Interconnects and speaker cables...the same. This cable by Brad, has been the most significant upgrade, more so than many other upgrades I have made, in a very long time. Seriously! I wish you my best, MrD. @fthompson251, Brad was a delight throughout the process, and it went great from the beginning, and fast, although not in one day, as you. You will not be disappointed. My cable is still breaking in, as everything is smoothing out, has become more liquid, with a greater sense of ease and flow, to each musical note. Oh, and the dynamics! Your system/room looks wonderful, and I believe, you will have the same reaction I am having. BTW, I too have been using those "portable door stoppers" as damping weights, and they do a great job. Let us know your experience with Brad's Revelation Audio Labs cable. My best, MrD.

Some miraculous breaking in of the RAL cable going on the last 12 hours. Brad states his cables can take 250-300 hrs. to fully break in.....I have always believed in cable/equipment break in, but this is a preamp that is truly, now, showing what it is capable of. My best, MrD.

Ralph, what do you mean by " if you don’t bypass an umbilical? The cable is directional, and reading Brad’s material talks about grounding at one end (source), and not the other (component). The power cables I have built, I do this the same way. My best, MrD.

There has never to my knowlege been any sound quality issues with RAL cables.

I own a RAL umbilical for my MF Titan power amp, It's excellent.

You should be careful handling them because they are solid silver and cryoed and can break if you twist them aggressively.

If Brad is back in customer support mode I'll order a pre-amp umbilical soon.