Hi everyone,
This is my first post here, but I wanted to share with you the experience I am having at the moment.I bought yesterday a beyerdynamic T90 and a O2/Odac combo with an AC/AC adapter (1000mA with 18volts output). I really had them for a bargain : 800USD (for the whole package, but it's Asia !).
I have listened for it for 1 hour yesterday, and my impressions were negative actually as the treble were too harsh and the bass not really there. Moreoever as I was coming from a sennheiser momentum I was more used to a closed/bass headphone.
Now I am having another round of 3 hours listening continuously...............
First to address one main question. the Jdslabs O2/Odac has WAAAAAAAAAAY enough power to drive these 250ohms headphones. I cannot put more than 9 oclock with 2.5*gain (lowest setting) without having my ears bleeding.
Then, for the equalizer (based on the frequency responsegraphs we can find on internet), I have set on foobar2000 :+2Db at 5Khz -1Db at 7Khz and 14Khz, and -2Db at 10Khz and 14Khz.
With these settings, I am BLOWN AWAY completely !!!!!!! I listen mostly to classic music, and it seems quite unreal even with no burn in. I really feel in the concert hall. For other genres it may be too difficult to be objective. But for the classical music, I am in love already. Btw, the amp is completely silent and do not get hot AT ALL !
Anyway, I really do not think the T90 needs any 1000+$ amp/Dac to drive them.
OF course you are only judge for your money. It was just an opinion I wanted to share with you.
Have a good journey in the Hifi world ! from this early experiment I can honestly say that I am gonna stick with this combo for quite a few years bfore changing anything.
PS : the Blu Ray movies are amazing as well ! nothing compared to the sennheiser momentum (LOL). The O2/ODac is a real wonder for the price. I really wonder how we could have a more neutral/better sound !?
If you do not want to enter the decreasing price/quality ratio inherent to the Hifi world, I really advise you to consider this wonderful combo !