Band: opinion spread · Dot: weighted average
Sources split, though one side is much bigger. Most hear a warm-neutral, mildly U-shaped tuning — neutral with a sub-bass lift and relaxed upper mids — voiced for musical, fatigue-free listening, and call it the most refined take on AFUL's house sound. A smaller camp finds that same balance too safe: 'vanilla,' 'too flat,' 'too laid back,' lacking character for a flagship. And a few hear it as livelier than its warm reputation — more W- or V-shaped, with energized upper mids and treble. The graphs back the majority, and the 'livelier' reads line up with shallow fits and brighter sources, which lift the treble.
Measured
Fifteen IEC-711-class squig rigs, normalised at 500 Hz against Harman IE 2019: bass within ~1 dB of the target (+0.9 dB at 20 Hz, +0.6 at 100 Hz), the ear-gain region 4.5–5 dB below it from 3 to 5 kHz (median peak at ~3.4 kHz, +4.8 dB over 1 kHz against the target's +9.4), roughly on target at 8 kHz, then an electrostat lift near 15 kHz (+9 dB, where rigs disagree most). A B&K 5128 rig (Earphones Archive) shows the same shape. On the same rigs it carries the Monarch MK4's bass with ~3.6 dB less at 3 kHz, and ~2 dB more sub-bass but ~5 dB less 8 kHz than the FiiO FX17.
vs. listeners — The 'V/W-shaped, energetic' reads sit against graphs that show a relaxed upper midrange. The variables that move the top end explain most of it: on three rigs a shallow insertion adds 2–6 dB around 6–8 kHz over a deep one, and the brighter-hearing listeners mostly describe wide-bore tips, shallower fits or bright sources.
“Call it warm-neutral and smooth, where every slice of the spectrum stays in its own lane, none jumping the queue for attention.”
Headfonics (Nihal)
“I wouldn't want anyone to buy that set for $1300 and say it's too vanilla and too safe.”
Tone Deaf Monk (Head-Fi)
“The result here is that it's a set that is genuinely fun and very exciting to listen to, but at the same time, it's not a set that strays too far into like meme or wholly unbalanced territory.”
Precogvision (YouTube)
