@eclumsden Why not take a plunge into the world of separates with the Luxman c900u + m900u. Those 2 are the prior gen and available for a lot less than new. I heard them on the same system back-to-back against the Luxman 509x. Big mistake on my part. The separates were so much better.
I would rather use the cheaper and sonically preferred Holo Serene preamp with the Luxman m900u.
The footprint of the separates is not that much bigger than the 509x.
The most important consideration for me is that I can run about 15 - 25 feet of XLR cables from the preamp to the amp. The preamp and the sources are far away from the speakers and not messing up the sound.