[aleph_naught]

I got the Modi2/Magni2 set for my HD650s when they originally came out. Total disappointment: pots had static when inc/dec vol, and had balancing issues. The headphone amp on my macbook didn’t suffer from any of that, was indistinguishable in sound quality with a blind test, and was way less hassle. Only difference was that it didn’t get as loud, but since I don’t listen past the macbooks max, I put them in the closet and never looked back.

[cthalupa]

That's unfortunate. I use planar headphones, so a dedicated amp is pretty much a requirement due to the power draw vs. regular dyamics. I opted for a Schiit Bifrost/Asgard stack (they didn't have the magni/modi combo at the time) and had great experiences with them. I opted to perform one of the upgrades for the Bifrost myself, and after that had some issues with the DAC resetting and audio cutting out - emailed Schiit, told them what I had done to troubleshoot, and they shipped me a replacement upgrade part the next day.