Graphic Equaliser

Received a rose 150b yesterday. I have b&w 8004 d3 speakers paired with Marantz MP10. The PM10 has no graphic equaliser and so doesn’t the 150b. Trouble is the 804 d3s have a very bright diamond tweeter.

Fortunately I also have a pair of sonus Fabre nova 1s. Connected them and got a very pleasant sound even though I don’t prefer bookshelves

How else can I adjust the treble on the 150b?

It seems if you switch off the preamp functionality the treble issue gets resolved.

Sounds like another software issue………?

I got rid of my B&W’s for that reason and replaced them with Audiovectors. I use Roon which has an excellent DSP and is worth every penny of its £80 per year. It’s an amazing bit of software I’m still finding really cool features after 3 years of use.