Very nice, but I prefer the KZ ZS10 Pro for the better base.

The TRN BA5 are good in ear earphones. The bass and treble is very nice. They do however stick out of my ears a bit. If you like to listen to music in bed. These earphones will not be comfortable to do that. However, they were not purchased to be listened to in bed, so with that aside. The quality of the music is good. You will need to burn them in for at least 40 - 60 hours. This means the earphones won't sound at there best until they have had at least that amount of time playing music. This is something that needs to be done with all earphones regardless of the brand. The seller communicated well. Some sellers on CJ cannot be trusted, but I have no problems with this seller. This was my second order with the seller. Product was packed securely. No damage to the product or the packaging. It also arrived quickly to the UK.

like bed the product!

I'm new to IEMs but I made a lot of research, it promised a lot. Soundstage, microdetail etc are common terms but doesn't make a lot of sense in traditional earphones but you get the idea very quickly when listening to Tchaikovsky. If you're doubting in buying the BA5, don't. Just buy them. The construction is very nice, they have a nice heft and they feel good in your hand. The cable feels a little bit cheap but it seems that's the standard so mine will have an upgrade. Lows as others have put are a little bit behind, but just add 2 or 3 levels 2-4 kHz in the equalizer and that's it. Also I bought a TRN case from another store and Ali combined the items. Shipping to México was 3 weeks, which is fast compared to other purchases.