My O2 amp is a bit marginal with the 300ohm HD650s ... not bad but I need push the volume knob close to max when I crank the 650 ... so every so often I think about getting something better ...
A week ago I was looking at the DAC and headphone amp ratings at Audio Science Review. I noticed that Amirm gave high marks to the JDS Labs Atom Amp+ and Atom DAC+. At $110us each these were damn inexpensive compared to most of the others they were ranked with.
Two things stood out:
1st - Amirm is petty tough ... if he rates anything highly you know it's good.
2nd - was JDS Labs ... I bought my O2 amp from them and they are a great outfit, made in the US, and they stand by their stuff.
So, I ordered the Atom Amp and then a what the hell moment hit me ... and added the Atom DAC+ as well.
I've only been using them for a few hours and have not tried to compare them to the old setup ... but my impression is simply this: Why did I wait so long ... money well spent.
