Used with Spinfits. Seal and fit is great. Cable is nice, build quality excellent. Sound. Bass is elevated about 3-4db above neutral, and is high quality and detailed bass. Mids are slightly warm and very detailed. Mids are perfect, there is no upper mid shout. Treble is even with the mids, highly detailed with a little extra bite around 8khz. The dip at 5khz is noticeable but helps to keep sibilance under control. This dip is the ONLY criticism of these IEMs. You do lose some detail because of this, no, the detail is pushed back slightly not lost. Imaging and depth are excellent. This is a big sounding IEM. I have more expensive IEM's, the Mangird Tea could sell for $500 and still be good value.