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?????