As for the comment the k550 being better it really all depends on ones preferences. I say simply try them both and whatever one you like better that is the better headphone. I read so many comparisons of this vs that and then I try the headphones and I find sometimes agree but sometimes...

Agreed. I use foobar also.  

On my PC I can also choose the DAC processing. If this is adjustable also on the MAC then go to the sound section on your control panel and make sure you are using the maximum adjustment of the processing on your Fiio. Also if you can get a SPDIF/optical cable and then use the Fiio SPDIF in...

Save $150 and get the Fiio E17. It is an AMP/DAC. Hook it up to your computers spdif and you can use the E17 DAC with 24/192 processing. Much better than my creative X-Fi music card. You can't go wrong with the E17.

Update   After using the E17 for a couple of days now and also got the SPDIF cable to hook up to computer. The E17 hooked up to the PC and Laptop using the SPDIF and 24/192 makes the music much clearer and less muffled and also sound staging is much improved. Make sure when using the spdif...

Just got the E17 yesterday and I must say that the E17 has turned my Audio Technica 900X into a bass pumping headphone. I would highly recommend the E17 to anyone who thinks that their headphones need more bass. The extra power definitely helps but the EQ adds more bass without distortion not...

Not sure what you are saying, but all I can say is the video reviewer indicated at 1.34 that you can just plug these headphones into an Iphone/Ipod without an amp. This imo is not true. To get any decent sound and volume out of these headphones an amp is needed. Plugging these headphones into an...

I listened to these with just the Iphone4 and these definitely can not be used without an amplifier. Used without an Amp, the sound is muffled especially the bass. Anyone considering one of these better budget for an Amp. Very well rounded headphones. Not sure why OP said it was decent without...

Yes I have the L9 cable from Fiio. I have used this on the IPhone. From my understanding though the E17 is still used only as an amp through this connection. I have also connected it through my computer and laptop and used the USB which then is using the DAC from the E17 which does give a marked...

I was really suprised that the amps made such a huge difference even on such efficient headphones.

After a couple of months of burn in I noticed the 900x has not changed much from day 1. The bass has become a little more pronounced and more solid. The highs are still great, the sound stage is a little more open. Overall the difference is not like some other headphones where it was night and...

These headphones are easy to drive not difficult at all. 150+tax is really cheap where? As for amp I would say it all depends on what music you like to listen to. These are overall pretty balanced headphones, unless you are a bass head. Since these are pretty balanced headphones you can get an...

Quote: When I say that these aren't the most balanced of the headphones that I have tried doesn't mean that these are not balanced. What I was saying is that the Dt880 and the Ultrasones were more balanced imo but they are also more expensive. What makes them more balanced imo is that...

It's called China Club Audi and Video. Ask for Sunny Yao. Internet site is www.ccav.hk. You can go there for the address. Go to the Mong Kok location.

Update. The sibiliance on first use is nearly gone after about 50hrs of use. The bass is slowly improving. The main difference from the old 900 is that the bass is improved but the mids seem ever so slightly more muffled but the highs are still good. This is based on portable source and mp3 at...

Just picked up GR07 a few weeks back and must say that these earphones are one of the best earphones I have heard. I also have RE0 and Panasonic RP-HJE900 along with a few Shure earphones and these blow them out of the water. Out of the box they did not sound good at all but with every hour of...

I have been reading and lurking doing research on head fi for a little while before deciding to purchase some headphones and earphones. I am just visiting Hong Kong and decided to purchase these new headphones that just hit the market here. I tested these against the Beyerdynamic DT770's,DT880...

Hi Everyone,   I have been reading a lot on equipment and have settled on Audio Technica ATH-A900 headphones and also Vsonic GR07 earphones. The question is what is the best amps for these two or do they actually need amps? i will be using a PC laptop and Iphone as source. I have looked at...