21 reviews, 76 product profiles, 59 launches filed
Reviews measured before they are described, a product finder that scores every profile on the same six axes, and new releases as they are announced. Every score carries its reasoning and every claim carries its source.
Written by us, measured first, and scored on every axis we test.
Launches as they are announced, with the announcement attached. Specifications are the maker's claims, not our measurements.
WirelessEach earpiece carries an 8.3 mm dynamic driver, a 6 mm planar and a balanced armature, with LDAC, aptX Adaptive and active noise cancellation, on sale from 10 November.
Dynamic DriversThe monitor maker's open-back reference headphone uses 40 mm titanium-plated PEN drivers at 150 ohms, ships with Sonnox calibration software, and reaches buyers in December.
IEMsOne 10 mm dynamic driver, three balanced armatures and a micro-planar per side, split by a four-way physical and electronic crossover, rated at 38 ohms and 110 dB/mW.
IEMsThe KE4 II moves to one dynamic driver, two balanced armatures and a micro-planar per side behind a three-way crossover, rated at 15 ohms and 104 dB.
Recently researched profiles, photographed ones first. Each one condenses the cited reviewers into six comparable scores.
Kiwi Ears
The Kiwi Ears Quartet is a $109 hybrid with two 10mm dynamic drivers for the low end and two balanced armatures, in a lightweight resin shell with two rear switches that give four tunings. Bass is the headline: dense, deep and impactful with strong mid-bass, called the star of the set in one review. The cost is clarity higher up. Lower mids can sound veiled or muddy behind the bass, the upper mids and treble are relaxed and smooth rather than sparkly, and one account hears the whole presentation as dark and slightly compressed. Opinions split on how much the switches matter, from four distinctly different IEMs to modest changes, and on resolution, from surprising detail retrieval to a lo-fi, radio-like sound. One reviewer also hears upper peaks that make some vocals harsh, while others describe the treble as smooth and non-fatiguing. The soundstage is average, with decent separation. Comfort is praised, passive isolation is good, and it is easy to drive from a phone. It suits bass-forward, warm-sound listeners and electronic or modern pop playlists; listeners wanting a neutral or highly resolving IEM are pointed elsewhere.
Strongest: Bass 7.86 sources
Noble Audio
The Knight is Noble Audio's most affordable IEM at $289: a tribrid with a 10mm dynamic driver, a Sonion balanced armature and a piezo super tweeter in CNC-machined aluminium shells with an acrylic faceplate. Its identity is the midrange, described as rich, emotive and natural in timbre, with acoustic instruments sounding lush for the price. Bass is controlled and balanced rather than boosted, with limited sub-bass in one account and punchy mid-bass in others, but never bloated. Imaging is precise and placement easy to pinpoint, yet stage size splits opinion: large in one review, modest in dimensions in another, and deeper than it is wide in a third. Treble splits as well. One listener hears it bright with a raw edge and slightly sharp female vocals; others hear it smooth or slightly dark, with one noting no sibilance. Detail is good but not class-leading, with micro-detail slightly muted by the relaxed top end. It is easy to drive and the stock 8-strand cable is among the better ones at the price, but the cable ships with a 4.4mm balanced plug only and no adapter, there is no hard case, and the shells are large with long nozzles that may not suit small ears. The result is an easy recommendation for vocal and acoustic listeners who value tone over sparkle.
Strongest: Mids 8.04 sources
Kiwi Ears
The Kiwi Ears Astral is a $299 hybrid in-ear monitor with one 10mm bioceramic dynamic driver and six balanced armatures per side in a resin pseudo-custom shell. Its reputation rests on staging: imaging is described as precise and pinpoint, with good width and depth for the price, and one account calls it the most accurate soundstage that listener had heard. Treble is heard as clear and airy without harshness or fatigue, though one listener finds it on the polite side next to brighter rivals. The bass is where impressions part. One review calls it powerful and at times excessive; others hear a lifted sub-bass with a restrained mid-bass that costs punch, while another finds the mid-bass thud more satisfying than the sub-bass. The midrange splits too: warm and full-bodied in one reading, slightly thin in the lower mids and short of warmth in another, with vocals described as forward and natural. Fit is comfortable despite a wide shell, passive isolation is above average, and the modular cable with 3.5mm and 4.4mm plugs is praised, while the ear tip selection is called sparse. It is easy to drive from a phone or dongle. It is judged a strong technical performer for the money, with one verdict noting that it comes priced high against strong competition.
Strongest: Soundstage 8.24 sources
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A verdict that cannot be checked is an opinion. Every review is built from the same three steps, and each one is published alongside the score.
The unit is put on the bench before anyone writes a word. Frequency response and the physical fit are recorded first.
Each axis is rated on its own, so a single strong trait cannot carry the whole verdict.
The axis scores, the reasoning, the author and the test date ship together. Affiliate links never change a score.
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