Hidizs MP145 VS Queen of Audio x Eir Aoi Misty Blue

URL to full Review

Head-Fi.org original ranking

URL to full Review

Head-Fi.org original ranking

Hidizs MP145 is a single-driver planar IEM built around a 14.5 mm planar magnetic transducer (30 Ω, ~104 dB/Vrms), housed in a milled aluminum shell. It ships with screw-on tuning filters that make modest shifts to bass/treble balance rather than rewriting the signature. Hidizs markets the MP145 as calibrated toward the H-2019 target and lists a $199 MSRP (often discounted on the official store).

Sonically, the MP145 presents a U-shaped tuning with an audible sub-bass lift, restrained upper-mid gain, and treble that’s energetic but can show a ~5 kHz edge with a bit of upper-treble sparkle depending on the filter used. Resolution and separation are solid for the price, with fast planar transients and convincing macrodynamic impact; staging is average-wide but imaging locks in positions cleanly. Independent measurements/reviews note the filter set’s subtle effect, good detail retrieval for the bracket, and only moderate air/extension versus the best planars.

Build quality is robust, though the large shells and thick nozzle may challenge smaller ears; weight is ~9.5 g per piece and isolation is decent when sealed well. Given frequent street prices around $129–$159 on the brand store, value is strong for those wanting planar speed with a fun, sub-bass-tilted balance; just don’t expect expansive stage or the most airy treble. Overall, MP145 reads as a well-executed, filter-tweakable planar that prioritizes punch and clarity over ultimate refinement.

The Queen of Audio x Eir Aoi Misty Blue is a collaboration IEM built around a hybrid 2DD+2BA configuration with a 10 mm bass driver, 8 mm mid driver and dual BAs handling upper mids and treble, plus interchangeable 3.5 mm and 4.4 mm terminations and even a bundled USB-C dongle for phones. The hand-finished resin shells and Eir Aoi-themed faceplates position it as a collectible piece as much as an everyday tool, with pricing generally sitting in the ~US$220–270 range depending on retailer and region. Vendor descriptions and user impressions consistently note a light, contoured fit with good passive isolation, helped by the relatively compact shell and multiple tip sets.

In terms of tuning, Misty Blue aims for a balanced, mildly U-shaped signature: bass has some warmth and weight from the dedicated low-frequency dynamic, but it is described as not bleeding into the mids, which stay natural and clear, while the BA drivers add air and extension up top. Early community feedback characterises it as warm, pleasant and mature rather than aggressively V-shaped, which suits vocal-centric J-pop and rock material associated with Eir Aoi’s catalogue. Some listeners note that while overall tonality is cohesive, certain instruments can feel slightly short of “ultra-resolving”, hinting that tuning quality slightly outpaces raw microdetail at this price.

Technical performance is respectable for the segment: a short comparison video reports improved sub-bass reach, upper-treble presence and imaging over another QoA model, suggesting solid staging and positional cues even if overall resolution is more mid-tier than benchmark-setting. The included USB-C dongle, using a Realtek DAC, is generally regarded as usable but sonically bland and power-limited, with owners recommending a better source to unlock the IEM’s dynamics and separation. Considering the strong accessory set, artistic design and well-judged warm-balanced tuning against only moderate detail retrieval and a slightly elevated street price, Misty Blue represents a solid but not class-dominating value in the ~US$220 bracket, appealing most to listeners prioritising tonality and aesthetics over maximum technical performance.

Audionotions original ranking

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Jays Audio original ranking