I would get WIMA MKS2-50 4.7uF caps, as a drop-in replacement for the original caps, and be done. https://www.reichelt.de/MKS-2/MKS2-50-4-7-/3/index.html?ACTION=3&GROUPID=7169&ARTICLE=31930&OFFSET=16&SID=95WCWq1KwQATIAAF2FeY0d78eafa7c25e97f37d0412e4dda8fe7e&LANGUAGE=EN   They should fit...

Depends. Tonally maybe yes, but detail rendering and air gets a pretty severe hit. After trying this DAC, it only made me want this DAC but with a higher "resolution".

  1) To get the power, you need to pull the power - in other words: when you turn the volume up, you pull more power. When you listen at 20% volume at normal gain, you won't pull more power when you then listen at the same loudness at high gain, with the respective lower volume setting.   2)...

I saw the pics, and i'm not impressed. I bet the original caps for power supply of the IC's are already higher rated than it would have been needed for optimal function. Then he swaps the 1uF film-caps to WIMA's, but also at 1uF.   Just for fun I will solder a film cap with higher...

I have not compared the surround of the THX suite of the Recon3D/Titanium vs. the SBX-surround personally, but i have read enough posts which suggest that they are NOT the same, and that the majority clearly favours SBX-surround over THX-surround.

Can you route the SBX-surround from your onboard implementiation to optical-out? Then you could go optical-in to the G5 for original SBX.

When i used an optical cable(amazon basics) for the first time, i wasn't aware that you have to remove the (transparent ) cap.

That's why i suggested to call it BXAE-Surround instead. Only question still is, if the updated 7.1 SBX-Surround of the E5 is different. Anyhow, Creative messed up - also in regards to their response to you, of different devices having different HRTF processing capabilities, since the Omni...

Ah, it's a max9722. Gives 5mW more at 32Ohms compared to 97220. 

  I made a pic of the PCB:       The HP driver chip is actually a Maxim max97220(close to the white caps at the poti, which you can't read on the pic tho).   Other observations i made, are that the Opamp runs at +/-5V(they gained one Volt with some diode trick close to the biggest cap)...

"Triggerpoint" massage.   http://www.triggerpoints.net/symptom/earaches-tinnitus-ringing-itch   I'm still not sure which muscle it is directly, that causes my nowadays usually only very mild stress induced tinnitus, but i have this one under suspicion...

...and be aware that the price is for a single earpad.   While we're are at it, out of curisosity i ordered the K702 pads for my K712's, but the memory foam pads are worlds more comfy(i wear glasses). So they wouldn't be an option for me, even if they would offer better sound(which they do...

alright, it's indeed there. It's that tiny chip which sits right before the headphone jack(as one would expect) with "AIF" on it.   They also added another one supposedly for the frontpanel connection...

Ye, i must say it throws the sound way out of your head, even more than those virtual surround processing which comes with soundcards.   On the other hand it affects SQ quite a bit.   It adds another HRTF(from Joe) to the headphones, which are tuned to have some kind of their own HRTF...

The more you rotate the vol. knob, the more mW will be delivered to the headphones(to make it simple). 132mW wouldn't be enough only when you wanted to get it louder than vol. knob at max.(yes, fiio e10k can deliver more mW, but only in high gain, where it starts to distort when you push the...

"Speaker-out" is "line-out". I doubt that the onboard soundcard has actual speaker terminals for passive speakers. 

I must correct myself:   It's generally not a good idea to attenuate by decreasing R14 / R20 if someone wants less than effectively 1x gain, because those resistors determine the input impedance of the O2. In my example you would lower the input impedance from 10K to only 100 Ohm for "0.5x gain".

  the opamps don't "drive" the headphones anyway, that's done with the TPA6120 chip, which drives the HD800 with ease.

that's also a good point - so much for "double amping" when you connect an Amp to the HP-out.   BTW:   (recorded with my realtek line-in, because SB-Z ones got fried by me the other day )     it's not there, the maxim chip is a 16pin one at the size of the opamps you actually see on...

It's nowhere to be seen tho. Would have been nice if they actually used this chip, because then the card could have an ~1 Ohm outputimpedance instead of 22 Ohms, and the output power would be higher aswell(and that from a 5V single supply).

can't see a max97220 chip anywhere on the board, dunno who came up with that. https://images-na.ssl-images-amazon.com/images/I/91PlSB6GetL._SL1500_.jpg   here u can see this chip(it's on my smsl sd-793II -  the chip close to the potentiometer) http://imgur.com/oRG8XXI

Stereo direct = bypassing the soundprocessor, everything else is like before.

Tinnitus can come from tense neck-/head-/jaw muscles too. One can test this by stretching the neck(more precisely the M. sternocleidomastoideus) with looking more upwards and more in the opposite direction of the stretch.   If the tinnitus gets louder in this position - et voila.

It depends mostly on the output impedance of the DAP, and is most relevant with IEM's like yours, which usually react very sensitive to a (too) high output impedance. Your headphones(at least from your sig) are pretty unproblematic with this, and i doubt there is any DAP out there which could...

those degrees in a mixing board, don't represent directions of a +/-90° circle around you tho. Those mixing consoles are meant to mix with speakers after all, which are usually positioned at about +/-30° in circle around you.