Here a listening test suggested by Gordon Rankin:
"Go to Amazon and buy Rebecca Pigeon's MQA cd. Rip it play it back with something that does not support MQA like iTunes or whatever. Then play it back with Audirvana or something else that supports MQA and the result is 24/176.4 from a 16/44.1 track. Then compare that to maybe the HD Tracks downloads at 24/96, 24/88.2 (I think the closest sounding to the MQA), or Bob Katz version at 24/176.4."
Of course you'll need to borrow a MQA DAC.
Thanks I have a high res version of that ALBUM so will have a go
Appreciate it