Now here's finally a comparison I've been wanting to listen to for a very long time - at last, after a couple years, I was able to source a good condition Nova Basic to compare to the Classic there on the left, which has been one of my main workhorses for quite some time. I don't think the Nova Basic is particularly "rare" but I've had a lot of trouble getting my hands on one for various reasons, now to see how it stacks ("stax?") up to its big brother.
The Nova Signature is technically part of this too, I did have a LNS but sold it since it was worth more than the Classic and I didn't perceive much of a difference between the two. Maybe the LNS had slightly better treble extension but I'm confident I could not tell the two apart in a blind test.
So the Basic is actually a pretty interesting headphone in my opinion, it is essentially splitting the difference between a NB Lambda and the LNC/LNS. The sound sig is quite balanced and mid-centric like the NB Lambda, but it has that trademark smoothness/warmth of the Nova line and thus where the NB Lambda presents things in a bright yet euphonic way, the Basic presents them with similar euphony but in a more relaxed manner. I could see people who like the NB Lambda but wish it was just a tad less bright, really digging the Nova Basic.
Now the other key that makes it surprisingly similar to the NB Lambda, and where it really differentiates itself from the LNC/LNS big brothers, is in how forward the presentation is. The Basic is an extremely detail-forward Lambda, in fact I think in this respect it even outpaces the NB Lambda and draws the closest comparison to the L300. I also really enjoyed this quality of the L300, it was not as resolving or technical as the L700 but in some ways it made up for it with a fun, detail-forward presentation that brought most of the track right up into your ears and didn't really make you work too hard for it.
The Basic pulls a similar trick, and yet somehow manages to simultaneously build a wider soundstage than the L300 (though, to be fair, the L300 does have one of the smallest stages of the Lambda line in my experience). What this gives you is a detail-forward, fun, punchy presentation that nevertheless has just a hint of layering and texture, it's really an awesome and peculiar presentation that could very well be one of my favorites in the Lambda line.
Compared to the LNC/LNS, the Basic is not quite as resolving nor nuanced, but it feels way more "present" due to the more forward sound, and is arguably more immediately engaging and fun as a result. The Nova line is known for being a smooth, enjoyable listen, and that is definitely the case here, but it's quite apparent that this is the more rambunctious little brother in the trio.
I would be very interested if anyone knows what drivers are in the Basic. It sounds close enough to the LNC/LNS that I could see it being the same driver, just presented differently; but it is just different enough that I'm wondering if it derives from the Lambda Pro Classic/Spirit instead (I have not heard those to be clear).
So tl;dr: I like the Nova Basic a lot, kind of like a warmer NB Lambda with L300 detail presentation. Anyone who likes the Nova line, the NB Lambda, or the L300/L500 would probably be happy with it.
Also, it has the superior black color scheme...so much better than the olive drab
