So, my desktop chain, is near perfect now.. Tidal MQA on Mac -> usb -> E50 -> L30 High Gain 2 o clock -> Sundara -> brilliant! thanks ASR!
I also have iphone Tidal app -> wiim optical -> topping E50 optical in -> Topping L30 pre out to-> Denon 250 BT AVR playing in direct mode to Dali Zensor 1 s...