Good morning Dsnuts. My burn-in process is going a bit slower than I anticipated, but I'm nearing 20 hours (if not there yet). So here are a few more observations on what I think about the CKM50:
- Still an enjoyable IEM that handily competes with the $50 to $100 range IEMs..
- Although isn't muddy, it is on the borderline of actually being too much bass.
- Highs have a nice weight and clarity to them, but the micro details aren't as great as I thought they might be (as of yet anyway).
- Mids are nice but a little bit too congested.
- Vocals are nice and forward, but again not as detailed as I have been hoping they would be (maybe they will get there).
Let me go into a little bit more about details (micro details). I was using an early '70s r&b tune by Bobby Womack as my test track. The song is called "If You don't Want My Love." In that song is basically vocals, drums, bass, guitar and bongos. The instruments are separated quite well in the original recording with the bongos being placed over in the right-side corner (there seems to be a lot of space between the percussion player and the other musicians). You can hear the bongos and details quite well in my TF10 (with new upgrade Fiio cables), but I could barely hear it that percussion with the CKM50. I could hear it, but barely. Maybe more burn-in is needed.
On the other hand, I decided to break out my JVC FXT90, which would have been a legitimate competitor of the CKM50 at both original prices points (the JVC was listed at $114 before shipping from Japan). It's even better now, but when I first got the FXT90 it had a micro-detail of vocals and instrumentation that was just amazing to me at that price point. Like I just stated, it's way better now, and the CKM50s don't come close to FXT90 in the micro-detailing. Don't misread what I'm saying, I still think the CKM50 is a very good IEM (especially if you can get for under $50), but it's not in the same league as the $114 FXT90 IMO.
Now, the sound signatures are nothing alike either, so one might favor one over the other from that standpoint. The ATH has more sparkly highs; a good soundstage, yet instruments seem to be closer together. The JVC, on the other hand, is a darker and warmer IEM than the ATH, but there seems to be more space between instrumentation. Also, the deep natural and realistic plucking of guitar strings is just marvelous with the FXT90. I know it's probably out of your range for cheapies search for the best sound, but you should pick up the FXT90 (since it is - in my opinion - a standard bearer of how great an IEM around the $100 mark can sound). I think the FXT90 would be a good IEM to compare against all of the cheapie IEMs you come across in sound quality. It's clearly (at this point) my favorite $120 (or less) favorite IEM. I'm not putting IEMs such as the TF10 (which sells for about $400 but you can get occasionally for under $100) in that category. But if I did, I think the FXT90 best the TF10 in some ways and vice versa, but that's not something to get into any detail on this thread. Happy listening and thanks again for pulling my coat tail on the CKM50...