Cube Audio Nenuphar Single Driver Speaker (10 inch) TQWT Enclosure

Cal,
Yes, Nelson Pass has thoroughly demonstrated his acumen of designing and building excellent amplifiers across a very wide power spectrum. 
He's enjoyed remarkable success with his Pass Labs amplifiers.  Yet I find his explorations via the First Watt line of amplifiers so intriguing.  He obviously has a deep passion for these special amplifiers given the multiple models/versions He has developed (And continues to do so) over the years. Every one of them is uniquely different from their siblings. 
Charles 

Thanks guys! I already had a casual listen to the A3 driven by Hegel 390 streaming Tidal off internal dac. Playing Norah Jones Come Away with Me album. What stood out was how wonderfully coherent the sound was. Slightly warmish with lots of air. Great focus. Norah's head was in between the speakers. The American distributor says there is a owner near me so when his Reno's on his home are done he will try to arrange a demo for me of the Cube Audio. Magico at first listen lacks tonal richness on say a piano. But have to listen more.

@charles1dad  What's crazy is that Nelson not only makes the commercial First Watt amps, but also releases (for free) additional FW-like designs for the diy community.  I was just reading about a single-ended 8W SIT amp that he's going to release kits for soon:  https://www.diyaudio.com/forums/pass-labs/357517-simple-se-sit-amp.html

I like this quote from him regarding the design:  "I tried to make it more complicated and obscure, but it's just not in me."  

Just more evidence in favor of the combination of sensitive speakers and low wattage amplifiers in my book.

Lots of talk about First Watt but also consider the Bakoon 13R which imo works excellently with Cube Nenuphar’s 

I've only heard superlative reviews for the Bakoon products, would love to hear one.