Euclid Impressions https://www.audeze.com/products/euclid I did not buy a pair, but was fortunate to get them from the glorious SBAF loaner program. I had them for 5 days, but used them 3 times. I wanted to evaluate the way that I would most likely use an IEM. Out and about in public. They came in handy when I was at the daughters soccer practice. The source was my android phone/apple music/razor onyx/ Euclid TLDR: quoting @rhythmdevils " an LCD-X IEM" Having used a LCD-X for a few years back in the day, this was like greeting an old friend. That dynamic sound with the tight, beefy low end, and a slight midrange veil. If I had an EQ on my phone, I would have bumped the treble up a few DB. In rock music, the cymbals were a bit muted in my playlists. I found these work the best (to me, to my ears, yada yada) with electronic music. I really enjoyed going through my deadmouse (electronic music) playlist. They worked well for vocal or non-electric instruments (classical for example) but I think there are better options of IEMs out there at a better price. Two gripes about the equipment. First is the cable, while it is a great cable, there is no slider that can pull together the left/right split to sure up. I like the cable behind my head and slider would have made the fit and function better. I did not see or find a slider if it was included. Second is the diameter of the outlet on the IEM was bigger than most. I had to use smallest foamie to get a fit. They became uncomfortable after a couple hours. To close up, I enjoyed them, they are a LCD-X IEM with a little less imaging and sound stage than an open back full size headphone, but non the less, a solid IEM. I do think they are one the expensive side of the value scale. A gently used pair at 60% of suggested retail price would be hard to turn down, if I was in the market for an IEM. Thanks to Audeze, @rhythmdevels, and SBAF loaner program!