Hello Emil,
I wasn't aware Quicksilver had a 300B. My experience with horns is at a lower level than yours, but years ago I had a pair of Wharfedale diamond 9.1s with a Rega Brio 3 and Cyrus CD6 for a front end. On a lark I bought some discontinued clearance Klipsch S2. I pulled the Diamonds out and put in the Klipsch. Literally layers of detail were exposed - it was like coming down a long hill in a car when your ears pop. Ambience and sense of space galore. I put the Diamonds back in and immediately noticed the vastly superior wide open midrange of the Diamonds. When I got my first Omegas I had a marriage of the two other speakers and then some. Chrystal clarity along with wide open unboxed midrange, and imaging that beat anything I had previously heard. Quality of bass is also first rate regardless of model. Your amp would be a great match for any Omega speaker.
