DUNU SA6 Ultra Review: Ranked #309 of 996

Last updated: October 14, 2026

The DUNU SA6 Ultra ranks #309 out of 996 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.

Brand: DUNU

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DUNU SA6 Ultra - ranked #309 of 996 In-Ear Headphones · Editor's rating 4.1/5

#309 DUNU SA6 Ultra Discontinued eBay

Pros: A six-armature IEM tuned with Z Reviews that measures well (score 75 across thirteen measurements).

Cons: A limited run that is now discontinued, so it is mainly found used, and treble sits about 3.4 dB below target, sounding dark next to brighter IEMs.

Released2022 (4 years ago)
BackClosed
ConnectionWired
Deviation From Target2.01 dB standard deviation
Driver TypeBalanced armature
Drivers6 x balanced armature
Form FactorIn-ear
Harman Preference Score75 (median of 13 squig.link measurements, calibrated to AutoEQ)
Sub-bass ExtensionWithin 6 dB of target down to 20 Hz (-2.5 dB at 30 Hz)
Tonal Tilt-0.15 (negative is warmer, positive brighter)

Frequency Response

How the DUNU SA6 Ultra measures across the audible range, against the Harman in-ear target that most listeners prefer in blind tests. Where the line sits above the target that range sounds louder (more bass, brighter treble), below it quieter. The curve is the median of 13 independent measurements, so one odd sample or rig cannot skew it, and both lines are shifted so their 500 Hz to 2 kHz average sits at 0 dB.

DUNU SA6 UltraHarman target
Measured frequency response of the DUNU SA6 Ultra-24-18-12-60+6+12+18dB20501002005001k2k5k10k20k

Measurement data: median of 13 measurements from the squig.link databases of aden, ankramutt, atechreviews, bakkwatan, eliseaudio, hbb, mmagtech, nymz, precog, sl0the, superreview, timmyv and zerostresslevel. Thanks to each of them for publishing their work.

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