Well, whip on this, then: https://www.modulargrid.net/e/happy-nerding-isolator-2022-silver
With this new 4 hp-er from HN, you not only get a PROPER 1/4" TRS headphone jack and preamp, you also have balanced TRS outs for left and right. And the cherry on the cake here, you CAN'T see...because it's the transformers inside the module, which not only isolate your modular from the interface to control noise and ground loop issues, but you can "punch" them a bit harder and, like any good audio transformer, you wind up with that "big iron" warmth due to a touch (or more!) of saturation.
Some don't dig having an output module of this sort. But having seen ground loop and signal crud issues in both dive bars and high-end Nashville studios, I think it's a pretty useful addition, as you never know when you're going to come up against those sorts of issues.