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

Cube Audio (Poland) designs single drivers and single driver speakers. 

Principals are Grzegorz Rulka and Marek Kostrzyński.

Link to the Cube Audio Nenuphar (with F10 Neo driver) speaker page:

Link to 6Moons review by Srajan Ebaen (August 2018):


Parameters (from Cube Audio):

Power: 40 W

Efficiency: 92 dB

Frequency response: 30Hz - 18kHz ( 6db)*

Dimensions: 30 x 50 x 105 cm

Weight: 40 Kg

* Frequency response may vary and depends on room size and accompanying electronic equipment.
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:

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.
Absolutely right about the non Commercial DIY offerings. A few years ago Nelson Pass designed a push pull version of the of the stereo S.I.T. 2 at 35 watts pure class A circuit. A generous Audiogon member loaned me his for a period of 3 weeks.

This was a really good sounding amplifier and actually one of the best transistor amplifiers I’ve heard. Just terrific with my Coincident speakers. Directly compared to my Frankenstein MK II 300b SET there were very similar characteristics. Switched the amplifiers twice over the 3 week period for direct listening comparisons.

I could have lived contently (very) with the D.I.Y. S.I.T. 2 amplifier.
But when the SET is put back in the audio system there’s just more 3 dimensional tactile- reach out and touch aura. A bit richer tonality and fuller more fleshed out vibe is present. Ultimately more emotionally engaging . The basic stuff I find that SET simply does better. I know however that some listeners would prefer the other excellent amplifier.

@toetapaudio I’ve never heard the Bakoon amplifier but reviews and word of mouth say they’re quite splendid. I don’t doubt they could go toe to toe with the First Watt (F.W.) No question the F.W. built by the esteemed Nelson Pass are far more known within the High End audio community and thus mentioned more often.