My Luxman is only 30W Class A hence I was assuming S5.5 will be good.
I think the Class A Luxman amps under report the power specs. The CODA 5.5 is not that powerful especially with speakers dropping below 4 Ohms. For example, I tried Schiit Aegir v1 amps in mono form. This gave me 80 watts in Class A and my tiny Magnepan Mini speakers sounded like crap. Not enough power for these slightly hard to drive speakers. The Aegir is a good amp on my headphones and if I were to get a CODA 5.5, I was looking to use it on headphones.
I was speaking with Doug Dale of CODA 2 days ago. He has my CODA #11, and he is going to update that amp to new or better shape.
I had messed up my system (fuses) by trying my SS imersiv D-1 preamp/DAC with varying combinations. He told me in our talk that the biggest issue he sees is having tube preamps hooked up to his CODA amps. He said some of these boutique tube preamps are not the most stable.

