It's a Long-shot: Meridian G02 conversion to balanced tape out

Seems like an obscure topic but I cannot get a response from Meridian. They don’t appear to respond to their "contact us" submissions.

I have recently acquired a Meridian G02 balanced preamp. It has two single-ended tape outputs that the documentation says can be converted to balanced. Presumably there is a cable that connects the 2 single ended outputs to an XLR, and then a setting that inverts one of the single ended signals.

Anyone know more than this? How to access settings or where to find such a cable?

Thanks all...