KZ EDX Ultra VS KZ Duonic

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KZ’s Duonic arrives as a budget release built around a new Flux 3 hybrid concept: an 8 mm planar for speed paired with an 8 mm “super-linear” dynamic for bass. The shell is compact, comfortable, and isolates well; the stock cable is functional, though the unique connector makes sticking with KZ cables sensible. Priced around $22–$30 and equipped with DIP switches, it targets flexibility without bloating the accessories.

On the preferred 1-1-1 tuning, the Duonic presents a slightly V-shaped balance with punchy, rich bass, energetic upper-mids, and an elevated air region that gives music a lively, “awake” character. Graph variations mainly shift the lower mids, while >1 kHz remains broadly consistent; compared with sets like KZ’s recent budget darlings, this tuning feels more vibrant and less “scratchy.” Technicals are surprisingly solid at the price—snappy transients and a sense of space—though the treble can get incisive/sizzly and mids occasionally lose focus.

Despite quirks, performance punches far above the sticker, edging into territory usually associated with ~$100 sets and making it a benchmark-worthy budget pick. Tip and cable upgrades would round out the package, but even stock, the Duonic offers a distinctive, dynamic listen that’s easy to recommend for those who enjoy sparkle and bass drive. Listeners sensitive to treble bite may prefer a tamer profile, while everyone else gets a uniquely fun, hyper-competitive sub-$30 option.