Converting stereo single ended to balanced mono?


Hi, I have three Thiel 3.5 stereo equalizers (bass boosters). These are single ended only. I was wondering about the benefits of trying to convert two of them to balanced mono operation. Is it possible? Is it worth it? What are the options for doing this? What are the pros and cons of these options? Are there any other upgrades that might be considered if and when these conversions might be done?

https://www.stereophile.com/content/thiel-cs35-loudspeaker-measurements

As always thanks in advance.

unsound
If you want hifi, ditch the equalizers. They will only mess up the phasing and add distortion and noise. Less is more. 
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I was wondering about the benefits of trying to convert two of them to balanced mono operation.
IMO, it will benefit if the rest of your system is true balanced.
make one stereo single ended box do the two positive parts (both R & L positive. (and then you are actually doing NOTHING to the internals of the box!) .. and the second box do the two negative parts. Again, once you have the negative signal, you are just entering it into a not modified box.

https://www.audiocircle.com/index.php?topic=118232.0