The Coda #8 at $3.5- $5K used is one to consider if you are looking at those amps. A slight performance penalty compared to the Luxman m900u in terms of clarity but it is pretty minor.
However, the CODA #16 ($13K without meters) is in the same league and maybe higher than the Luxman m900u. See if you can find a used one (no chance).
However, the CODA #16 ($13K without meters) is in the same league and maybe higher than the Luxman m900u. See if you can find a used one (no chance).