Changing Turntable to Balanced Output


So I’ve read that a balanced output (XLR) is sonically superior to unbalanced RCA cables.Is it possible to just add adapters to do this? Is it better to rewire the Tonearm? I own an Acoustic Signature Triple X which has a hard wired tonearm cable so this not an easy solution. Just wondering if anyone has done this and if it’s worth it?

128x128audiosaurusrex

Personally, I have thought once or twice to have a balanced phono stage, next to have that phono stage connect to balanced headphone amp, and finally to be heard through headphones wired for balanced operation. Nothing else included in this system. Can't say that it would all pan out, but curiosity still exists.

  OTOH, using a TT to feed a balanced phono stage in and of itself seems troublesome, only to feed from there an unbalanced system.

I could be wrong, but according to highfidelity.pl review of BAT VK-P6SE:

The VK-P6SE is a balanced design, with a passive "floating" RIAA correction circuit, ie after the RCA input the "positive" signal is amplified in one branch of the gain, and the "negative", which normally is shorted to the ground, here is amplified in the other branch. The ground connection is made with a separate cable run from a tonearm.

Does it means even though the cartridge connected to the VK-6SE inputs via rca cable, it still worked as a balanced connection?

BAT VK-P6SE review

 

balanced shmalanced..........unless all your components are differentially balanced, you will not get the improved performance.

balanced shmalanced..........unless all your components are differentially balanced, you will not get the improved performance.

This statement is false. The Ampex 351 tube tape electronics were used to record a great deal of classical and jazz recordings done by RCA and the like. Its internal circuitry is entirely single-ended except for the push pull output it has driving its output transformer to drive a 600 Ohm balanced line. The input used an input transformer as well. This allowed the tape machine to have microphones a good 150 feet from the machine with no degradation of the mic signal. This was long before an exotic cable industry existed. You might say that the balanced line system itself was the exotic cable industry prior to Robert Fulton creating his first ’Fulton cable’ back in the late 1970s.

Similarly if an input transformer is used with a LOMC cartridge (and the transformer is properly loaded to prevent ringing) then the tonearm interconnect will have far less effect on the sound of the system.

Its arguable that this is the one place you really want to get it right!

The advantage of running a cartridge balanced is of course to minimize any artifact from the cable- meaning an inexpensive cable can sound just as good as one costing 2 or 3 orders of magnitude more!

Now it is a fact that if the phono circuitry is fully differential that there is additional benefit (for example in our phono sections only two stages of gain are required to work with a LOMC cartridge run straight in- you get theoretically 6dB less noise per stage of gain). But balanced lines can be executed with single-ended gear if good transformers are used. Users of SUTs take note! All transformers including SUTs can be used to receive the cartridge signal in the balanced domain.

imhififan, Yes, the circuit of the BAT makes balanced sense, assuming the description is accurate.  If you want to get crazy, ideally you want the conductors of both phases of the signal to be "the same" kind of wire. For an SE IC, the ground side conductor is often the shield itself.  So the positive and negative phases of the signal are riding on different types of conductor, if such a cable is used for a balanced connection. Can you hear that? I dunno.

But some good SE cables do use an audio ground connection via the same wire used for the hot side.  In that case, the shield will not be connected to the audio ground wire, and using such a cable for balanced is "better".

Atmasphere can feel free to correct me if I am in error here.