Finally got this beautiful thing. Although, for the life of me I cannot figure out how to select the "MAIN-IN" input. Any Accuphase folks out there care to lend a hand? I'm still doing some listening, and have the DAC-50 and AD-50 add-on boards. I'll be updating with some impressions mid next week after some thorough listening, and comparison. Speakers are Magico S5 MkII, using Roon for streaming (with Raspberry Pi) and a Technics SL-1210GAE w/ ZYX Ultimate 4D cartridge.