Hi all.
Has anyone ever used hqplayer?
I have been testing relentlessly
Basically it lets to customise filters for your dac.
So far seems pretty useless has I cannot tell any difference at all,

People who use it. Swear by it
You can upsample up to dsd 512 too

You get 30 day trial
It will cost around £135 to buy.

To me it has snake oil written all over it.

Anyone used it with success?????