Very interesting. Dynamic drivers CIEM.

You can find at mouser electronics >> mouser.com the product code = Kobiconn 163-157J-E :) http://th.mouser.com/ProductDetail/Kobiconn/163-157J-E/?qs=%2fha2pyFadug%252b2eFQQ3LbTLg3p%2fJiFxlT7DTGoWrFdVk%3d

Quote:   Thank you very much for your report.

burtomr,   My adapter exactly used (2)Rean and (1)Viablue.   One Rean for the main part of adapter, another one I used its' internal pin for modify the fourth pin. I think its' internal pin is proper because come from the same material for the same sound quality, and this internal...

Quote: Thank you.

Quote: This is the link for DIY of this adapter. http://www.head-fi.org/t/661897/mini-balanced-to-3-5mm-adapter-in-my-way/30   In that DIY link has 3 revisions of adapter. The sound are different.   The sound quality depend on 3.5mm.Plug, Solder and Wire.   In my system...

Quote: Thank you.

Quote: Thank you.

Quote: Thank you.   Quote: Thank you AnakChan. I hope it will work with your cable.

  This is the thread for DIY balanced TRRS to single ended TRS adapter. http://www.head-fi.org/t/675333/trrs-to-trs-adapter-3-5mm-balanced-trrs-to-single-ended-trs-adapter

Finished !!! Komkrit TRRS to TRS adapter.         Photo with Komkrit adapter Rev.2   For mini balanced(Kobiconn) to single TRS adapter. http://www.head-fi.org/t/661897/mini-balanced-to-3-5mm-adapter-in-my-way     This DIY act as my challenge and...

When put the front and back ring into the part.

In the posterior of Viablue has two ring for lock the cable. I used the bigger ring to modify for lock my adapter.   Partial cut the ring to give the space for the fourth pin.

Cut the excessive rear bolt of Viablue. Used a file to cut it >>> not damage the line of the bolt.    

When finished, the ring can push to the posterior like this.

Use a round file to extend inner diameter of the ring.(only inner edge at the front)    

Modify of the Viablue head. This step must to do to increase the space in Viablue body.   The same as in http://www.head-fi.org/t/661897/mini-balanced-to-3-5mm-adapter-in-my-way/30 But I will post again to complete all DIY of this adapter.   Remove the ring by press it down against...

Test the fourth pin.   This is in the normal position.   When the jack has been plugged in. The fourth pin will spring out.   When the jack has been unplugged >>> the fourth pin will return to the normal position. As in the first picture.

The fourth pin for S...sleeve when look inside the jack.

Solder the Rean(Neutrik) jack to the Viablue plug.   Solder the fourth pin to the Rean(Neutrik) body. ***Solder at the end only. Leave the body and the head of the fourth pin free.   The fourth pin act as the spring when plug and unplug. -if solder at distal >>> the spring...