You guys this amp seems to tick a lot of what I've been looking for - namely balanced drive, amazing distortion figures, and spot on price.
It is missing two things - nowhere near as powerful as my current headphone amp and lack of class A. I'm honestly more concerned about power. Just looking for something with say 600 mwatts @ 300ohms. Though I hear over and over that power doesn't matter, I can't get over that I've got something way more powerful that sounds great.
remember that a 2x increase in power means a 3 dB increase in volume, and that the THX AAA 789 can do I think half a watt of power at 300 ohms?
even 125 mW is already very loud for HD 600, I don’t see why you would need literal watts of power unless you have headphones that have absolutely unreasonable power requirements.