This one seems promising...   http://www.m2tech.biz/hiface_dac.html    

What is the cheapest android device with USB audio? (phone, tablet, dap,...)

Don't know the  leckerton uha-6s mkii! Is it good? What you mean with "replace"? Use the ODAC and the leckerton AMP, or use the leckerton AMP and DAC?

I'm using linux and the sound is distorted. I need to set the volume at no more than 60% to get a clean sound. Is this normal?

anyone?

I'm quite happy with my current setup: Samsung S3 (usb) -> ODAC -> O2 amp Great sound! Can I expect much better from a Colorfly C4? (Only listening 16bits/44.1KHz)

The shells were made with a dental material (check post #1293). I have made the mix quite liquid and rotated the material inside my silicone molds.  The drivers were attached to the tubes with glue (transparent general purpose glue)

Quote:   From my experience the customs offer:   - Comfort (you can run and jump with your IEMs) - Isolation (the outside noise is filtered) - Protection (if you are in front of a really powerful audio speaker, the IEMs can protect your ears) - Great sound quality (depending of...

About the TWFK : Is it really the best tweeter available?   The highs on my DT880 are clearly better. The definition is superior. With the TWFK, some cymbals (from drums) seem distorted!  Comments?

Quote:   The shape of the tubes and the endings are almost the same in every ear canals. The most personal part is the ear part. The tube endings are always parallel to the ear canal. I can't see how a "fine tuning"can improve the final result! During my tests, I have rotated the...

Just an idea...   We could start a small database with IEMs designs specifications. It could include the electric schematic, shell materials, some pictures, sound characteristics, comercial IEMs equivalents, ... I have been reading this thread almost since the begining and the it was not...

Quote: No, the covers are not removable. It is quite easy to cut the glue between the wood and the shell.

Quote:   All I can say is that the first listening test was disappointing!!    Now, after some "burn in" hours they are much better. I hope to get even better SQ after 50 hours...   The sound is very balanced. The bass is not exaggerated, the amount is enough and very well defined...

Quote: I don't think the angle of the drivers inside the shell really matter. The only important factor is the length of the acoustic tube. So, the distance from the opening is important. For the TWFK, the length should be the smallest as possible and for the CI (woofer), mainly because of...

Quote: Yes, that's it - no crossover. The red filter is cutting the highs and the grey is optional. I have made a test without the grey but the highs are too harsh. (Others are using a white filter with the TWFK).