I currently own the HD595 and HD650.
I opened the HD650 out of the box yesterday and have been burning them in for about 30 hours.
I currently have both hooked up to the Fiio E7 through USB DAC and they sound very similar to me.
My question is:
1. Is the amp good enough to power the HD650? (It states 300 ohm on the box)
2. Or is it the fact it hasn't burned in enough that it doesn't sound better than the 595s?