As you can see in pic 2 the bottom tablet T705 has the little hole for mic where the T700 top tablet has noneSorry to hear you guys are having so much trouble regarding microphones on Lineage & CRdroid.
I own both the T700 & 2x T705y 8.4 tab S and looking closely @ both tablets I don't see a spot where the mic would be on the T700 like I do on the T705.
And I've actually swapped the charging port from the T700 into the T705 running CRdroid thinking it would fix my mic issue on the 705 as my other 705 running CR droid worked flawlessly. I ended up getting a brand new charge port for the 705 and low and behold the mic is actually part of the charge port for the T705.
Now the new parts in Mic works flawlessly.