Everything just sounds better!
This is my second Grace Headphone Amp and I missed the first one as soon as it went to school with my son. For home, project, or professional studios it doesn't get any better. I can't crank my monitors anymore so the next best thing is a great headphone amp (there is a big difference in quality). It's a huge investment but when I started to put my studio back together the first piece I purchased was the m903.