Would love to hear some more comparisons between the O2 vs Magni if anyone else has both of them.
Edited by cheuh - 12/26/12 at 2:27am
i appreciate your reply!
Will other people give their opinions to my question please?
I ALMOST did that when I set up my rig.
What? Where is this from?
If you order the O2 from JDS Labs, you can contact their support, or leave a message/note when you order that you want a black front plate. John of JDS Labs gave me the option but I opted out since I wanted the silver front to match the silver front of the ODAC.
Nope. Just your normal 9-10 pm. I really thought it was the headphones falling apart (HD650), but it was the ODAC/O2 combo. I felt better when JDS Labs confirmed it was a known issue. For me, I felt the HD650 needs the dynamics of high gain; low gain is fine, and I was perfectly happy with low gain with the HD600. But if you use an Ipod line out as source, you don't have the issue becaues of output impedance of ODAC... or something like that.
I wouldn't call it an issue. To put it simply, O2 amp is not designed to be used with 6.5x gain if dac with high output is connected. (ODAC has 2V output).
6.5x gain is for sources like ipod..
More technically, on AC with 2.5x gain max input is 2.8V. With 6.5x it's around 1.1V
On battery with 2.5x it's 1.8V and with 6.5x only 0.7V.
So with 6.5x gain you are overloading the input stage of O2, which translates to clipped sound.
Build your own and the problem is non existent. It really is easy.