Ha ha, one thing I forgot to do was recalibrate after switching the Onkyo with the A1400-8. Didn't have to change much, but a little. I just listened to another song I listened to in the last couple of days, and many times before. I've never heard it sound so clean and full. I think it must be because I'm able to play louder without being annoyed by distortion, and so some of the details that would have normally been lost to the ambient noise is now there. Maybe?