Too bad your thing isn’t balanced. It really limits it’s usefulness with a Pass amp
Not really as "my thing" as you so quaintly put it, is used with many Pass amps they have rca as well, and those that don’t my customers use these http://www.cardas.com/adaptors.php as Nelson said above about rca v xlr.
" Except for noise, it gives pretty much the same performance " and that noise is only becomes a factor with very long interconnects.
Nelson also made an un-named buffer for "my thing", (with over 900 world wide I think it deserves a name) the Lightspeed Attenuator to drive one or two models of his amps that are low input impedance amps around 10years ago on diyaudio, a few years later to be sold as the commercial B1 buffer by itself to be used with other passives preamps.
https://ibb.co/choBZS
Cheers George