I would you return the headphones mate?

If it is bad grounding isn't that hiss noise going to be persistent or absent on the external sound card?

Why would you need P, when you have voltage output of 7 Vrms?

I am I play lossless with foobar2000 and iTunes. No difference at all. ASIO is set to 24bit/80ms. I first thought it's most likely a DAC/OpAmp issue. But I can hear it even when playing the Xonar U7 and I am really losing my mind with thisssssss hissssssssssss 

Hey guys! I have some really annoying HISS sound coming out of my HD700s, when I play any sound (96+kbps/FLAC/ALAC) on them through my ASUS Xonar U7 or STX II. Is it my headphones or just the audio hardware. When there's no sound they are dead silent, so it's not static from my PC. P.S. the...

Thank you very much for your reply! I have already bought the STX II and I agree with you it drives the headphones surprisingly well... However, there is some nasty HISSSSS when any sound is playing and this is freaking me out. Could you please confirm or reject this? I have tried all gain...

I have just installed the card and the question pops up: Is there any way I could set this bloody card to output voic comm through the headphones, while other media streams through the SPDIF?   Thanks in advance!

Thanks a bunch for your sharing your experience and opinion! I am mostly going to enjoy the STX II (eventually) on my headphones with all the FLAC and ALAC files from my library and eventually gaming. The Z-5500's own sound is quite OK with me for movies, even thought it's mostly enjoyed by my...

Hey fellas! I've got a few of questions for you. I have read the entire thread and couldn't answer those myself in terms of my case. To help you out a bit, let me give you some initial info about the situation I am currently placed in. I have the ASUS Xonar U7 to which I have connect my...

The number of drivers implemented in Razer Tiamat 7.1 or Asus Strix 7.1 matches the physical requirements of a 7.1 speakers setup, thus my statement above. I was a bit unclear with it indeed. By headphones I meant any 2 drivers audiophile headphones that are most likely to be mentioned here...

      The best quality sound is achieved mostly by the hardware (hp's/speakers, soundcard, dac ,amp) and the source (audio or another multimedia file). The settings you should consider the most are the gain on the Gain Control (medium or eventually high for your M50's) and this will...

Hi there! If you're still having doubts about your purchase, maybe this video could help you out with your choice: As per my personal experience - I am pretty much in your situation reading a lot, asking a lot and having a lot of doubts. What I did tho, was going to a music store 50km away...

One thing remains unclear - do you want to get a good sound on your HD598 phones or on some speakers via the Xonar's SPDIF? Either way you can connect both at the same time and manage the output through the Xonar U7 Center. The headphones should go on the front and the TOSLINK cable in the...

Hi Jaawa, First of all, thanks for keeping the topic alive!   Secondly, EQ isn't enabled anywhere foobar/WMP/Dolby Home Theate v4, but even if I enable it and boost up mids/highs it will also amplify the problem I'm talking about.   Last, but not least, you totally got me wrong there -...

Hi again,   Since yesterday my laptop's geared up with the Asus Xonar U7 USB external audio + amp + DAC card. The difference between it and onboard is just mind blowing. I tried listening to my heroway modded headset, and after a mere 5 minutes my eardrums started crying for mercy! That was...