Absolutely no experience with this amp, but at $1595, (list) the Parasound Halo A23 has both single ended and XLR inputs. Power range ...160 into 8, 250 into 4. Shop around. You may find it discounted with possibly an audition period with return privilege. The downside is that just because a component features XLR input or outputs, it doesn't necessarily mean it's a fully balanced design.
I owned an A23 and an A21. A21’s typically go for $1,500 used. Buy one if you can afford it. Great amp with lots of power. I was happy with the A23 but found the extra headroom afforded by the A21 irresistible.
The source is a Burson preamp/Dac with balanced outputs as well so that's why I wanted the balanced amp to keep that balanced chain. If it's not possible with my budget for a new amp, I am open to suggestions such as an DIY amp kit or used/vintage.
Do you have the Burson Conductor 3X Reference? If so how do you like it? I’ve been eyeing one for some time.
Lastly, I would not dismiss class D amps so easily, I’ve always found them to have full, rich slamming bass. I replaced my A21 with a pair of ICEpower 1000ASP based monoblocks. They just seem to have more punch and headroom for days.
Good luck,
Martin