Balanced XLR to RCA Adapters: Good or Bad?


I’m thinking of buying a Clearaudio Ambient turntable with a Satisfy tonearm which has Balanced XLR cable plugs. My old NAD 3155 integrated amp (http://forum.audiogon.com/cgi-bin/fr.pl?ramps&1027213706&openusid&zz02pete&4&5) does not have XLR inputs jacks. They make adapters ( http://www.parts-express.com/pe/showdetl.cfm?Partnumber=240-430) which would allow me to connect the TT to my amp. [The amp works fine; it has been recently serviced.] But is it worthwhile to do this? That is, on the assumption that Balanced XLR cables are superior to RCA cables, would I, by using such adapters, undo the good quality of the XLR cables?

Should I go to the expense of buying a preamp with XLR input jacks and RCA output jacks, like the PS Audio GCPH phono stage? I listen to classical music and jazz.
franz456
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The highly respected Aetshetix IO converts balanced to single ended at the input and then back to balanced after the equalization. I don't recall if it just grounds one leg or does some other conversion like a diff amp to SE but it is not balanced all the way through.

In fact for a phono stage it kind of makes sense as you don't have to spend the money to build 2 perfectly balanced RIAA equalization networks for each channel.

The Pass Xono uses number 3, SE inputs but creates an inverted output at the end of the chain to create a balanced output. It is not really "fake" in that it doesn't have the illusion of balanced in with XLR jacks, it has RCA inputs.

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Thanks, Herman. To clarify, my no. 3 was just intended to refer to xlr input connectors, not rca's, which of course are single-ended but make no bones about it :-)

Best regards,
-- Al
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actually, a phono stage could use RCAs as balanced inputs if they float the ground. That assumes that it's not grounded at the turntable but I think that would be unusual.

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The manual for the Aesthetix IO indicates on page 8 that its front-end stage is single-ended, with the second stage converting to balanced, and the rest of the signal path, apparently including a passive equalization circuit, being balanced.

So a "fake" xlr input does not necessarily equate with low quality, and may be provided simply as a convenience feature.
A phono stage could use RCAs as balanced inputs if they float the ground.
True enough.

Best regards,
-- Al
I'm going to leave the part about whether balanced is better than single ended at the tonearm for those who enjoy mental masturbation.

As for using the adapters, Doug is right on. You will hear the degradation even if you use Rat Shack lamp cord. Even the good ones build for Doug have a sonic impact. Don't think so? Cut the connectors off your cables and direct wire them, then come back and tell me that short piece of metal can't possible make a difference.