Again, are you sure U1 feedback is implemented this way? It is connected wrong, should be along with the output.   Have a look at this: http://www.intersil.com/data/an/an1111.pdf

@XacTactX - I have already answered your questions in @ramachandra's thread. Also, you have 144 pages of useful advices in this thread. I've read them long time ago and suggest you to do so too.

U1 feedback point is wrong and non-inverting input is not referenced to ground :) Excluding these serious flaws, this is essentially a A47 amp.

You started a new thread without any need of it. It's the same mod, but you decided to show off yourself as the great copycat who even did things wrong. Sorry, wheel had been already invented.

Try NJM4556AD(D) OpAmp. 

OpAmp, output caps and C177 will do the most. Best output caps you can use - Elna Silmic II 22 uF/ 25V. Don't put any Low-ESR cap on C177, audiograde ones work best. Don't mess with the caps around the DAC (light blue ones on the first picture).   Be advised that the card uses big ground...

Last pictures are plain exmaples how NOT to do it. Sorry, but having so much stuff connected with wires in a PC case is rediculous. If you have ran a RMAA before and after the mod, you will know why. Also there is a reason some people suggest bypassing ratio to be around 1 to 100 at most ;)

Random loudness shift solved - I might need new speakers though.   Still cannot figure out how to make WASAPI/KS play stereo without tweaking the driver every time :(

Hello.   I have a X-Meridian 2G for couple of days and I notice some strange behaviour. I'm using Windows 7 64bit, Foobar 2000 1.1.10 with latest add-ons. Soundcard configuration is 6 CH input, 6CH output from the CMedia driver panel. Using 5.1 PC speakers.   Problem is:   - When...

Quote: What's the fun living then?  

Quote:   Thank you in advance for that :)   I should not be buying any new phones too ;(

Are you sure you have not something that is oscillating? Adding caps chaotically can create resonances.

Have you modded the STX somehow other than the XO?

Or your Vanguard was fake

Also have a look on Asus Xonar ST/STX. Headphone amp chip is TPA6120 = good thing. Dunno what the Headamp on Bravura is.

Come on, people. Buy this phone, review it and post your comments after burn-in.  I need more info if this is a buy, go KRK KNS 8400 instead or stay with Creative Aurvana Live!

Elna is not "El cheapo". Having caps leaked so soon might be a warning your PC Power Supply is of inferior quality and, if the case, may damage lot of things on your PC.

They are even being shipped to retailers any time soon. My concern is jump in or wait. I can have them for 200E in 2 weeks but my concern is that K550 will fall behind K601/K701/Q701 SQ wise...

Still nobody has them yet?

Earlier today I spoke with local AKG rep. He told me that AKG K550 is ordered and expected by their shop in couple of weeks. Gave me a good price. So it is now complicated - K701 for the same price, Q701 for 1.5x the price or wait. He told me that there is great demand and very limited quantity...

Quote: Why so serious?  

As I said in some other thread - Austria (where this model is actually made) and some Amazon reseller from Germany hold the record for insane Q701 price. You can buy it for 470E in Vienna and 542E online (= $750 USD!!! = 3 pairs of Q701). I can get it locally for 340E ($460) and I got my K601s...

@tdockweiler - since you have lisened to both K601 and Q701, how do you find they sound to each other? Doing the math, it seems that getting a Q701 will cost me about 2.5x the price I paid for K601. Does it worth it?   The more and more I read, the more Q701 seems to be the perfectly...

Currently, I'm very interested in Q701 and I'll be happy to read more replies on this thread. My primary HP is a pair of K601.   On praising Q701, please state what other HP you have used and how do they perform to each other.

Yes, but this market is getting more and more crowded. Any minute they delay the K550 is losing money. Nowadays even Philips is producing decen low-impedance high-quality headphones and the competition in this segment is getting tough, there is no place for mistakes, poor engineering, etc. Never...