can you add tone controls to a primaluna HP integrated amp

Another vote for the Loki, I use it between my source and a PrimaLuna Prologue Premium Integrated, it lets me enjoy listening to some recordings that are too bright and thin sounding. I have a very simple system and have it dialed in, great recordings sound wonderful, but a lot of my old Blues albums, specially live albums, don't. When I want to listen to those albums I flip the switch and it cuts down on the HFs and fattens the sound.

I’m sorry I just saw this. I have a Loki you could buy or just borrow. Good luck! It’s a nice device. Very quiet too. 

+7(?) Loki

Why you would let me borrow it ? Would be nice to try 

Why you would let me borrow it ?

Cause he's a "saint" https://cdn0.iconfinder.com/data/icons/totalcake-emoticons/35/saint-512.png
But you can also trial them for 15 days from Schiit, small restocking fee if returned.

Cheres George