The new Spatial Audio Raven looks most interesting and they offer a trial period. Same for Aric Audio Motherload XL. Sorry, I know they’re not the models you asked about but thought you might at least might be interested in taking a look as feedback has been outstanding and may save you $$$. Best of luck.
Lamm or Allnic Preamp
Charney Maestro speakers with Voxativ AC-2.6 drivers, Air Tight 300B amp, presently using passive preamp for volume control.
Looking to add active preamp. Considered Air Tight, Shindo, VAC, VTL, Zesto, Rogue, Thoress. But, have really narrowed down to Lamm LL2.1 Deluxe or Allnic L-6500.
Thoughts and advice?