Crazy in love. That's how I can describe my impressions towards the
iBasso Nunchaku. It's even with my declaration of the Cayin N3U as the best personal audio purchase of the last year. Now the N3U edges it only because it's a dap, and has more utility as a result, but as a pure value source, they are neck and neck. I prefer this, just sonically from a personal perspective, more than the iBasso DC Elite, the Nunchaku's more famous big brother. Why? Despite the DCE still having the edge in soundstage, imaging, midrange fullness, and bass impact, the Nunchaku aren't that far behind in technicalities (except for bass impact, where the DCE certainly reigns far supreme), while adding little color, but in tube mode, adding those harmonics and resonances that make tube sonics so enchanting, while delivering a precise, clean, and more extended upper midrange/treble response, that's crisper, and more shimmery and airy than it's big brother. As a self-professed treble connoisseur, who also happens to be older, good clear extended treble with plenty of air is more important to me than bass impact, so the Nunchaku delivers that in spades, where the DCE fails. Then the Nunchaku provides solid state mode, so when I want to jump off the tube bandwagon for awhile, I can do just that, and I'm met with a different, neutral sound signature in AB mode, that's similar to a saber dac chip, or eerily similar to the sonic presentation of the iFi Go Link Max, but with an even more refined presentation (I love the GLM, so this is a pleasure) with a broader soundstage. Throw in the filters (which are audible), High pass filter, AB mode, low and high gain, and it's just such a versatile unit for shaping sound signatures, it's wonderous tbqf.
The Nunchaku is a lean mean sonic machine that's versatile, fun, clean, warm (but not too warm), transparent, and full. For $299.00, it's truly a steal! iBasso keeps redefining what hi end audio performance can be within a more affordable price range (this started with the DCE and DC07), and continues forward with the Nun.
Now there can be faint ringing when bumped, and I have on rare occasion picked up interference, but I've also taken it out with me pocket cruisin', and had no issues with either remnant, so though not infallible, it's certainly rare enough that it's excusable when it does manifest. Also, it's transparent, and not the fullest or impactful note weight out there. Though I wouldn't call it thin, it's not exactly weighty or meaty. Not like the DCE.
Sure, I might still be in the honeymoon phase, but honestly, the Nunchaku has me pondering selling my DCE, as since it arrived, I've hardly touched my DCE (except for one day where I intentionally used the DCE to give the Nun a much needed rest). It elevates the level of performance on my budget gear and mid-fi gear just like the DCE does, but with far more versatility. Now this is merely a pondering, and probably doesn't happen anytime soon, but it's still worth noting, as an indictment not on anything to do negatively with the DCE, but just how strong a performer the Nunchaku actually is.
Early on, I wasn't very thrilled with the synergy between the Nunchaku and my beloved ISN H60, but either through burn in, brain burn, or just a settling of the tubes and internals, this combination is now stellar. Another amazing sounding combo is the Nunchaku and the Tanchjim Bunny. This love is an elevator, and it really does takes things up up up into the sonic stratosphere. No hyperbole. All believe. Or maybe i'm crazy in love? A bit of both?

iBasso Nunchaku + Hiby R3 II (transport) + iBasso CB-19 + power bank + ISN H60