Will look up some post for you to review and read through.
The amp is in working order and do not have any issues.
Currently, the ClassD is my primary amp driving Danny Richie designed LS6 speakers with Response Audio Bella LP 12au7 tube pre. I recently sold my Acurus A250 since I liked the sound of the ClassD better and looking to get additional power / try the SDS setup with bigger transformer/power supply.