To follow up my impressions few days back against recent hype of KZ Krila,
I already did the measurements and figuring out about switches and I did my mods on Krila:
The KZ Krila measurement L and R with all up switches (most boosted bass, but still around +10db sub bass with nice control on 100-200hz area :
Then these are the Krila Switches (
@baskingshark already shared the measurement last week, and my graph align with his) :
Well this is KZ guideline for switches :
Apparently, the setting switches for the bass (first 1,2,3 switches) are working as they said, with bass quantity improvement. But the 4th switch, which is supposed to reduce the high / ultra high frequencies, didn't work at all. I measured and I tried to distinguish with my own ears but there is no differences at all on the fourth switch.
Next, I opened the nozzle grill to check if the mesh only there for protection against earwax or dust, and I thought they are using zobel circuit to tune, not damper filter, but I was wrong. The mesh on the nozzle is a damper, and dampening quite much but still having quite good bass maybe due of the front vent also. So I opened the mesh up and measured them.
Here the filterless Krila without filter (of course unlistenable, I just want to check the driver nature and they are quite high resolving DD)
Looking at the filterless graph, the result remind me of some driver nature (filterless) like the Tanchjim Hana 2021 and the Truthear Hola :
So then I made my attempt to mod it, basically using foam, on top of the BA end, to reduce the BA shrill to make the timbre better, and Tanchjim filter but with 1 small hole to ensure good airflow for the bass.
The bass is great, tighter, great impact but high mids are too peaky, even peakier than default, but highs are better. (btw look at the mod1 graph, looked like Tanchjim Hana 2021 graph with better bass response here).
Then as I want to reduce the high mids pinna gain area, I double the filter, so I put another layer of mesh500 filter on top of the Tanchjim filter but I make another small hole at the same position with tanchjim filter's hole so the hole can be an airflow for the bass. Results are very good, I managed to reduce the high mids -2 until -3dbs from original state.
So after 2nd mods, the Krila have more body to the mids, not thin. with better bass of course and slightly better timbre. Not perfect but better for me.
Here the graphs after mods :
I tried the Krila after the mods and yeah I kinda like them. I also tried with my M17, of course they are much better but didn't stretch much from lower grade source like Timeless / planars or Z1R. I won't talk about it further as $1700 DAP is overkill for $16 IEMs, just because I already have it and why not.
The mods need extra patientness as there is only small gap between BA end nozzle to the nozzle end, so I have to put the foam on that tiny space without glue while attaching tanchjim filter and pressed the foam at the same time. Not really recommended for first timer and the default state of Krila is already very good for their class.
Conclusion is still the same, if you on budget and eager to something very good value with great price / performance ratio, or you already have great IEMs but want good beater set, or for diehard KZ fans out there, Krila is really great performance with exceptional technicalities for the price. Maybe the best KZ I ever heard within 5 years (note : i never heard KZ planars PR1 or PR2) and magically they are delivering the Krila with 1 dinner price.
Cheers!