Schiit Mani - any opinions ?

I would think that SUTs added to the Mani in MM (lowest gain settings), not MC (highest gain setting), mode would work. In MC that would overload the input.

Why not call Mike Moffat at Schiit and ask?

I got a Mani 11 days ago. A distinctive step up from my economical Behringer phono pre. I've never had any other phono preamp so I can't qualify how good it is to others in and above its price range. I'm also not sure how long to get fully burned in, thinking a month and it should be fully seasoned. 

I do have one question. I keep it on 24/7. The Mani or the wall-wart PS never gets even a little warm. I figured it is best to keep it on so it's always ready. Is it good practice to keep it always powered up? 

I think so; I keep mine on 24/7.

Brother in law has one with linear PSU
MoFi Ultradeck, Ortofon Bronze
amazing for the $$$$$$&

I'm late to this thread, but I just took delivery of my Schiit Mani on Nov. 9, 2019. It replaces a hand-wired PTP, all NOS tube MAGI Phonomena phono stage (about $575 used) and a Jolida JD9 ($399 in 2011 for v1 closeout), which weighs 10-1/2 lbs. The Mani weighs 1 lb.. I am astounded at what a complete package this is: its truth-to-timbre is impeccable, as its articulation, musicality, speed (without being zippy), all in a package with the footprint of a 3x5 file card. Its light weight makes it easy to configure the DIP switches to optimize for cartridge changes. I can't say enough good about this unit.