Are you kidding me ? Can't you distinguish the detailed sound, and the high volume? Every headset, when combined with the source is not powerful , its not have 3 full range of sound. When using WM1A, what is lost is the detail and the sound layers.

z1r has an incredible soundstage, extremely wide. Compared to my focal clear & Aurender v1000 combo, the z1r brings a good emotional, energetic, pleasant, detailed sound. z1r works best with powerful devices, better soundstage reproduction, and smoother high ranges. You should not use with...

perfect with sony 😘

Z1R is perfect pair with hifi flagship DAP. But when plug it into 1Z have alot of details. With 1A seems balanced and sweet mid. So with those mods, with a simple think is it will change firmware from this region to that region, for reach difference tone, right? It don’t have different about...

So, any ideas about WM1A to “weak” to drive Z1R (in ear). And with Mod FW WM1A maybe better when pair with Z1R? I try alot DAP but i feel power of Sony Dap is very low.

Thanks for your kindly support. One more question: what fw region i should try? My 1A has U region (universe). What better between U or J version of regions?

Pleas tell me why Upgrade a mod FW can effect to sound of WM1A? I think it based from hardware. And what exactly you changed in those fw? I tested on my WM1A + IER Z1R but nothing big changes?