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In Reply to: Further insights... posted by Al Sekela on December 19, 2006 at 13:58:47:
...thanks to you both for your useful responses. I have decided to try changing out my shielded design for the standard DH Labs cable in my switchbox for my amp. I'll make the decision then on how to proceed with the cable from the wall outlet to the UPC-200.Thanks Again.
Follow Ups:
....nonshielded, unmodified connected from the power conditioner to the switchbox with the Sunfire amp plugged directly into the box. A little too early to tell (it was after midnight) but immediate impressions were favorable. I was a little surprised that any differences would be noted, but I was very tired. I'll be able to do some more listening tonight.Sounds like I might be making a DIY DH Lab Cord to go between the wall outlet and the conditioner with no shield or modifications. I'm using a shielded Volex 17604 there now, another interesting comparison to make. This is kind of fun....although my wife thinks I'm nuts.
I have a DIY DH Labs power plus ac cord from the wall outlet to my power strip...it sounds great to me.the wall outlet is an Oyaide SWO-XXX, so the male plug is a P-079 from the same mfgr. The female is a Furu FI-11Ag plug.
I missed out on listening last night but plan to do some more tonight. I've got the cable, some techflex, and a little shrinkwrap just waiting for the ends as a Christmas gift - I think she got me the Marincos from Parts Express. Then I can make a DH cable to between the outlet and the UPC-200 conditioner. If for some reason I don't like the DH I'll try the VH recipe.Thanks for the encouragement.
I didn't do extensive A/B tests and it may be psychological bias but I think I much prefer the DH cable unshielded. I can't put my finger on it but the standard shielded 12 gauge I created seemed to be a little "sterile" - not bright but not involving. It seems to me the DH Labs cable (no shield) added a touch of warmth and seemed more natural. Not sure if that makes any sense. Not a night and day, knock your socks off difference and as I mentioned I didn't do much swapping. But very noticable to me.I think all of these small differences really add up. Changes to my power supply/distribution in the last month have included:
1. Replaced the standard wall outlet with a Hospital Grade Isolated Ground Cooper outlet (from Lowes) - I know, not the end all in outlets but it was a cheap tweak.
2. Added a PS Audio UPC-200 to provide non-current limiting conditioning for my Sunfire 300 Amp and Musical Fidelity A3.2CR Preamp.
3. Replaced the stock Musical Fidelity pre cord with a Volex 17604.
4. Replaced my cheesy keychain RF remote on/off switch between the Sunfire and UPC-200 with a DIY manual switchbox using DH Lab Cable.
5. Replaced the stock UPC-200 cable with a shorter DIY DH Lab Power cable.
Done for now, at least until I can't resist the urge to swap out the stock Sunfire power cable with a DH Labs replacement. And not to forget running a dedicated 20 amp line (my listening room has it's own 15 amp line so I'm in pretty good shape). It NEVER ends...
But a little dull-sounding compared to a tweaked audio cord. If your DIY cord does not sound better, you need to do some more research.
...I see an after Christmas shootout coming up! Truly I expect the DH Lab cable to be better, we'll see (or hear).
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