I have the Sony amp and love it ! So detailed and well, just superb ! No regrets at all. It manages my Focal Utopia's superbly and they are not bright at all. I have said elsewhere the Utopia's were too bright on my Pioneer amp - which I otherwise loved. The Clears were fine on it but the Utopia's could not perform as they should. This amp sorted that ! It is such an easy listen without being, IMO, warm.
By chance I have seen your comment mentioning the Hugo2 which I have this weekend to demo ... not to replace my Sony but to see if it is worth upgrading my Mojo.
I have compared the Sony to the Hugo and would not part with it for a Hugo 2. I prefer the Sony which, to me, feels more controlled and musical. The Hugo2 is great (and as I am considering it for outside use maybe a comparison with the Sony is unfair). The Hugo2 compared to the Sony seems far more bass heavy and in your face whilst still being detailed. It almost makes the Sony seem bright, which it isn't !! This was with Utopia's and Sony Z1R; so quality open and quality closed to compare. I tried a variety of stuff from Pink Floyd, Daft Punk, Adele, Dido, Muse and Linkin Park.
I loved the Hugo2 but not enough to buy as a replacement for the Mojo - the difference is, to my ears anyway, minimal. As to Sony vs Hugo2, sorry Chord, no contest !!
If you want to try the Sony and Hugo2 give Unilet / Sound Sanctuary in New Malden, SW London a ring. Their Hugo2 is with me at the moment but they are great easy going guys.