"The Audeze Euclid is overall sturdy and feels solid on hand. So far I haven’t encountered or experienced any quirks when using the said earphone. The only weak point that I see, and this is true to all IEMs and earphones that use the same connector, is that the MMCX may break easily. I hope companies would start investing in a lock mechanism where it can protect the connector from accidental pulls, or excessive pressure or force. "

The detail retrieval, tonal balance, and technical performance are top-notch, and there’s no mistaking just how accomplished the whole package is. At $1299, we’re well into the realm of luxury products where practicality goes out the window. But for enthusiasts ready to take the dive, they can look forward to a class-leading product to take their listening to the next level.

Although the Audeze Euclid planar magnetic IEMs come with a hefty price tag, they also deliver heaps of quality in every area you'd expect. The sound quality is brilliant and well-balanced, helping any type of audio shine, while the build quality of the earbuds is exceptional.

Audeze has crafted a wonderfully natural IEM with one of the best sound stages around. Although Audeze doesn’t lack in the sound department, the fit was something that didn’t really suit me, even with the exquisite design. The price is sure to put some off, but the Euclid still screams high-end no matter how you want to put it. This is a big improvement over the iSINE for me and I am looking forward to what else Audeze can do with IEMs in the future.

Audeze did a magnificent job with the Euclid, delivering IEMs with an incredibly wide soundstage and excellent tonality. The large planar drivers offer exquisite clarity and balance, and the bold design gives the IEMs added character. Coming in at $1,299, the Euclid are aimed squarely at enthusiasts, but they have the sound quality to back up that price tag.

So if you're considering the Euclid, I'd suggest starting with a much cheaper IEM first - the Antlion Audio Kimura Duo I mentioned earlier is nearly £1000 cheaper at ~£150 and delivers a very similar experience in terms of usability if not out-and-out audio quality, with the helpful addition of an attached microphone if you need it. That makes it a significantly better value option, especially for gaming, but if you want something that pushes the audiophile envelope in a similar form factor, the Euclid are spectacular.

Before I listened to the Euclid, the price tag seemed a bit high to me but after multiple weeks of listening I can only conclude that the Euclid easily has the sound quality needed to defend this price tag. Audeze has delivered yet another high end, top quality IEM.

My conclusion is going to be a somewhat nuanced one. On the one hand, Audeze has achieved a remarkable feat in closing off a planar IEM, and I really do think the Euclid is one of the better sounding planar IEM I’ve heard so far. Add to that the exceptional technical performance for detail and separation qualities, and things start to look quite good for the Euclid. On the other hand, the bar for planar IEMs isn’t particularly high - especially closed-back ones, and so the tuning still could use some work and refinement. Compared to other less expensive hybrid and tribrid IEMs, the Euclid’s tonal balance simply isn’t all that competitive.

The Euclid is a great option for audiophiles who want a convenient, closed-back, and portable planar magnetic IEM. I really enjoyed my time with the Euclid. I love the detailed yet relaxed vibe of a planar headphone, and the Euclid did not disappoint. The Euclid has a natural and revealing sound that's neither fatiguing nor analytical. I especially enjoyed the Euclid with complex instrumental tracks and slower-paced music. There is definitely a mid-high focus, and the Euclid might be bass-light for some. I never felt like bass was lacking, but it's not the highlight. And the soundstage is amazing, instrument separation is phenomenal, and detail and clarity are top-notch.

The Audeze Euclid planar-magnetic IEMs are the best of their kind available. Top marks to the engineers at Audeze for being able to miniaturize the planar technology into a manageable form that manages to maintain the peculiarities of this amazing type of driver. Every little detail is presented with precision and musicality. These IEMs are so good you can drive them with a top-quality DAC and they’ll sing beautifully. Their tone is perfectly balanced and providing they are driven by a decent quality source; they require no EQ or tonal adjustment. If you want the quality of a top-end pair of open-back headphones in the form of a pair of earphones, these are an amazing choice. These are definitely a pair of IEMs for audiophiles, but if you love music, you’ll love the Audeze Euclid.

Audeze Euclid is among the most interesting earbuds on the market. This is because these are among the few plano-magnetic earbuds out there that, thanks to a larger-than-usual (but not monstrous) housing, have room for a larger diaphragm than those used in dynamic earbuds. That means the Euclid has enough power in the bass, which is usually a weakness of earbuds. Admittedly, there is a lack of punch in the deep bass compared to dynamic earbuds, but the quality of the tonal structure is exemplary.

The Euclid are fundamentally Audeze planar magnetic headphones. They’re just transformed into a smaller size and shape, and are actually intended for portable listening. They can be driven adequately by almost any device, and just manage to be small enough to be relatively discreet when wearing in public. But most importantly of all, they maintain that Audeze house sound. Sheer dynamics are a bit soft, and they don’t quite portray that limitless high-end or soul-pounding bass that other high-end IEMs can deliver

In terms of sound, though, I have to admit that I was impressed. It’s hard to perform fair A/B comparisons with conventional headphones, but my sense was that these are comparable with the better closed?back models I have tried. The tonality struck me as generally neutral; if anything, there’s a slight emphasis in the midrange, which is probably the least bad area to have slight emphasis in a monitoring system. And the overall sound is more natural than you might expect from in?ears, with no obvious splashiness or weirdness from crossover artifacts. At the low end, provided I’d put them in right, I could hear EQ moves at 50Hz on bass and kick drums; at the top end, their frequency response was perhaps a little muted above 10kHz, but that’s probably better than being too bright.

There’s no denying the audio quality of the Audeze Euclid—these earphones sound excellent. The pricing and the design decisions, however, are a bit perplexing. Planar magnetic technology is wonderful, and there are plenty of advanced materials in play inside these earpieces, but these are the most expensive planar magnetic earphones or headphones we’ve tested in recent memory, by a wide margin. In the planar magnetic realm, we’ve also enjoyed the $600 Audeze iSine20 in-ears and the the $700 HiFiMan Ananda over-ears. While we truly enjoy the Euclid’s sound signature and think other audiophiles will, too, we wish there was a custom-molded option at this price, or that this non-custom model was less expensive.

However, at a price of 1,499 euros (RRP), you have to put some serious money on the table for these handmade high-end headphones. For this, audiophile music fans only get a standard accessory package. In practice, the Euclid demonstrate a flat, almost analytical frequency response with a strong midrange differentiation and an open and wide sound in the treble. Basses, on the other hand, are in short supply with these in-ears. The stated high maximum sound pressure level in combination with distortion-free reproduction is unfortunately not confirmed in the practical test. The Audeze Euclid are therefore suitable for music lovers with the necessary spending power who appreciate a high level of detail and speech intelligibility and like to listen to jazz and classical music.

If you’re expecting sonic fireworks for the not-inconsiderable outlay, you may be disappointed. If, however, you want the most precise, insightful and realistic version of whatever you put into it, the Audeze Euclid is nothing short of thrilling.

The Euclid aren’t the most demonstrative listen on first acquaintance - but it doesn’t take long for them to reveal themselves as a beautifully balanced and staggeringly detailed listen. As long as you treat them right, source-wise, anyhow, these are superior in-ear audiophile-grade headphones.