I have a KZ ZSN Pro IEM and it's been going strong for 4+ years.

I also have a cheap Bluetooth QCY IEM that I use for podcasts and when I don't want wires tangling me.

Whenever I change from the Bluetooth QCY to the wired KZ I am in awe. The KZ ZSN Pro is a blast to listen to. Specially metal. The definition, the sound of the bass drums, everything is clear and powerful.

So I decided to try some entry level open back headphones and bought the SHP9500 that was cheap on Aliexpress recently. I thought I would find it even better since a lot of people sang it's praise for the price, but I am underwhelmed.

I find my KZ to have way more definition and power.

Also I need to up the volume of my smartphone quite a bit compared to the IEMs. It is near max volume.

Of course they are different beasts and the IEMs are literally inside my head. I don't really know what I expected.

I'm sure beyerdinamic or other more expensive brands might be better, but I don't feel like going down that path.

I'm going to keep the SHP9500 for a week more to see if I like it for different situations, but for now I am not amused.