Thanks much for your response.
Base system
Schiit Ragnarok 2 integrated. Fully balanced XLR pre out to comparison amps
Schiit Bifrost DAC
Bluesound Vault 2i Octave Records Audiophile Masters V5 (Steaming Various TuneIn, Radio Paradise)
Spatial M4 Sapphire (approx 400 hours)
Blue Jeans Cable Belden XLR and digital coax audio interconnects
Mediabridge 12 ga 10’ speaker cables
Comparison amps: Van Alstine DVA M225 demos, PS Audio M1200 currently (40 hours)
The space is 11’x14’. Picture is taken from the back wall. Speakers are 3’ from the front wall, 6.5’ center to center, and 18” from the right side wall. The space is open to the left.
I’m hearing little difference in sound stage. I may be tone deaf but I’m not hearing any substantial tonal differences between the 3 amps which is really surprising to me.