My own logic, is to insert the CIEM nozzle tip is the as close as or a bit more then the front of the UIEM tip. CIEM insert depth more like UIEM with triple flange ear tip.

This is my 4BA+1DD. 10mmLCP + 2ED + SWFK.

He mean ED is the Mid so normally start with higher Cap like 10uf to 6uf...for me 4.7 is a bit low. I usually use 20uf on ED and, for treble, I use 1uf to 0.8uf for SWFK.

The KZ all BA iem i have is AS10, AS12 and ASX. Still love the ASX wide nozzle mode without mesh. I have not heard the AS16 and Pro X. so no comment. Ipod will not power properly the PR2.

I think you can skip the DQ6s and get the Trio. I got my at USD 20. I own the og DQ6 and the Trio is all round better then the DQ6, especially the bass quality. edit: typo

You can try Sonic Memory SM1.

Currently selling in China at RMB2666.

Here is what I found on the Dogpill. Enjoy. https://medium.com/@vaushvidya/the-rise-of-the-dogpill-465e3b11cd61

The bass problem is normally due to the seal issue. A good seal is essential, as the vents are for tuning and pressure relief. many factors can still cause this: crossover, phase cancellation, tubing length, and size. It helps to go through all the pages for starts. This thread is my DIY iem bibble.

add another natural source of radiation: Internal Radiation All people have internal radiation, mainly from radioactive potassium-40 and carbon-14 inside their bodies from birth and, therefore, are sources of exposure to others. The variation in dose from one person to another is not as great...

EA500+Kato SSteel Nozzle+Tape mode FR. For Pre-DSP Comparison.

Moondrop FreeDSP in the house. MoonDrop Free DSP link thru Moondrop Link apps. PEQ range 40hz-10Khz. Q: 0-10. Currently pair with EA500+Tape mode+ Kato SSteel Nozzle. Nice clean bass, great sub, and slam, quality and quantity. Kato treble. Sweet vocal as usual. 5% closer to TOTL...

I tried the reverse polarity tuning method with my KZ ASX and quite liked it. 1xCi, 1xED, 2x31736, 2x30017. 31736 and 30017 are connected in reverse polarity with Ci and ED. I re-shelled the BAs into a new shell and added 2 switches.

Finally, have time to share the graph. Big bass for basshead, DD-like. I did cross the ED at very low 200Hz to reduce the bass. 51ohm on the Ci. 20ohm and 30uf on ED.

I always slap 50 ohm on my Ci and foam to filter until I get big drop around 250hz, and let the Ed drive full range with 10/18ohm. The bass is cleaner with 50 IMO.