From my personal stash. I am a vintage stereo collector/tech. Beautiful condition, working perfectly. Was saving it to restore for vinyl use. Yamaha "natural sound" seems best to me for vinyl. Face and knobs near mint. Case has a few cosmetic issues, couple chips and some light scratches. Moving so downsizing and offering. These are either class A or class B use (switchable). I never noticed any difference in the modes, that could be just me.
eBay