Quote: I leave in Europe and a brand new ATH-A900X is around 520$ and a brand new ATH M50 are around 220$ ....On the other hands in either case the Opamp exchange will improve the sound and is cheaper than buying a new pair ATH A900X...

  Never tried any opamp...I am just asking around Opamps for improving instrumental music..Mids and Highs..I want to improve both (Headphone side and Speaker side) but mostly headphone side as the speakers may need improved themselves and not worth the hassle..

Hello   I have Xonar Essence ST card (default Opamps) paired with ATH M50 on headphone side and Altec lansing 5021 on speakers side..I like more orchestral music, ambient music, instrumental..With current setup the bass is not very deep but i don't mind..I am thinking of changing the opamps...

Hello guys I am pretty begginer in this Audiophile field..As i am not gaming at hardcore level i decide to buy a ST instead of other gaming cards.So i decide to go with music/sound quality instead of gaming features... My headphones are Audio Technica ATH M50.I listen mostly Instrumental...

Hi jesb ...  I am creative hater because because of the mentality of Creative in general (marketing, paying devs and driver stuff) so i went from sound blaster cards to Xonar DX and then to Xonar ST that now feed my ATH M50 headphones.. I game too but i realized durring my time with Xonar DX...

Hello I am new here..I am a noob at audio.I switched long time ago from gaming sound cards (Creative) to listening quality side so 3-4 years ago i bought my first quality sound card Terratec Aureon 7.1 space.Now i own an Asus Xonar DX and in a couple of days a Xonar Essence ST will arrive at...