I own Cube Nenuphar Mini speakers and I was also fortunate enough to have a personal demo/listening session with Ken Songer at the home of the original founder of Whammerdyne Audio, Pat Hickman. A friend of mine set it up and I didn't really know what I was in for but I'll always remember it. First, both Ken and Pat were so generous to spend time with us on a weekend and for Pat to open his home, which was beautiful, and he even showed his "lab" where he builds his amps.
As far as the speakers are concerned they're works of art. Ken designs and builds them by hand. The driver in the open baffle model looks like a sculpture. The sound was amazing from both the open baffle and sealed box models. My friend, who is an open baffle guy, naturally preferred the open baffle model. I slightly preferred the sound of the sealed box model as it had a bit more punch, bass and clarity, but both agreed we would be happy living with either speaker. When I got home to my Cube speakers I was pleasantly surprised that they share a lot of the sonic characteristics of Ken's speakers. This isn't too surprising as both are single driver, crossoverless designs. If you haven't heard a single driver, crossoverless speaker you should seek out the experience, but don't judge too quickly. There's something about the coherence and immediacy of the sound that I've never heard from other speakers. At first it can be a little confusing and even underwhelming. But spend some time and when you go back to a traditional speaker it will be almost impossible to "unhear" the advantages. My friend nailed it when he said the Cubes aren't bright, but everything is lit up. There is no missing detail but nothing sounds harsh, edgey or hard, unless that is in the recording. Everything sounds natural and the timing is spot on. When set up right the imaging and depth is insane. The drawback to me is that the sweet spot isn't the biggest, even though the frequency response is good off axis, but if you're not in it the speakers can beam, and have a headphone effect where the sound comes from the left or right side, whichever you're closer too. But when done right they're pretty magical. Ken's speakers just took everything to another level though in terms of the dynamics, texture and "you are there" feel. They stop you in your tracks and give you goosebumps, which is the highest compliment to any audio system in my opinion. The Cubes have been my favorite and best sounding speaker I have owned or had in my house, but the Songer's raise the bar even more. They will always be on my "hope to own" bucket list and I'm always happy to read about Ken's speakers getting more and more attention, as they deserve.