This was my first IEM and first DAC too. And I have to say the IEMs are fabulous and the DAC too the audio quality is super clear and crisp and the DAC makes it even better for HI-Res lossless audio( I use apple music). I alwa wanted to buy IEMs but never really purchased them concept kart made it super easy and the delivery was before time just one day early but still it's early. Have been enjoying these IEMs so much they perform better than my ₹3000 JBL Tune 710BT headphones the audio is better the clarity too and soundstaging is also better music feels wider and my friend tried it and he says it sounds like you are in a concert he has been to concert and he does say it sounds like you are listing from the fan pit of concerts.
Bass : crisp and tight
Mid tones : really really good especially the vocals are beautiful I generally listen to bollywood songs, raps and Synth music the vocals in bollywood songs are superb!
Highs : since I'm a beginner I am not that experienced to say if the IEMs process the highs well but yes they don't pierce your ears.
Comfort : Very comfortable and light though in my experience my ears hurt after 1-2 hours.
Since I got these IEMs and the DAC I am not using my headphones much for music listening I do still use them but only for lectures, YouTube, movies. These IEMs do well for movies but cables are a hassle so I prefer my bluetooth headphones.
Comfort : 9/10
Sound : 10/10