Strange Eric, I had the exact opposite experience when comparing the Minimax Plus and the Calyx. First off, the buying experience couldn't have been more different. Buying from Bill at Morningstar was as easy as it gets. Buying from Calyx was a totally different and frustrating experience. After about 4 months I finally got a working Calyx to compare with my Minimax that by then had the DEXA discrete op-amps.
My thoughts when listening through the Genesis 5.2's in my 2nd system was that it was the Calyx that sounded edgy, and the Minimax effortless. The soundstage on the Minimax was larger in all dimensions, especially noticable with more presence around the extreme edge of the soundstage. I find myself listening for hours with the Minimax, but many times have shut the system down after 30 minutes when the Calyx is hooked up. I still own both, but plan on selling the Calyx.
My thoughts when listening through the Genesis 5.2's in my 2nd system was that it was the Calyx that sounded edgy, and the Minimax effortless. The soundstage on the Minimax was larger in all dimensions, especially noticable with more presence around the extreme edge of the soundstage. I find myself listening for hours with the Minimax, but many times have shut the system down after 30 minutes when the Calyx is hooked up. I still own both, but plan on selling the Calyx.