Due to an amp failure at home, I had to temporarily move my NFB-11 to my home system....so for a few weeks at work, I was running my DT990/600s straight from the laptop.
Amp at home was fixed, so I brought the NFB-11 back to work. But this time, I also brought a 20 year old british integrated from home that I didn't use. I like the amp in this integrated, and the few times I have tried the HP out, it was loaded with power. So, I figured it would be a step up from the amp in the NFB-11.
Holy cow was I ever correct. Using this amp with the NFB-11 as a DAC only is a nice improvement. Now I am thinking I need to try some of the hard to drive Hifiman Orthos!