Hi everyone I had a chance to listen to this amp a few days ago at an audio meet. The amp has a speaker and headphone output. I listened to the headphone output with my HD600's and I was really just stunned at how good the headphone output sounded, I havn't heard many tube amps, I mainly have...

I was wondering how the 2400 stack up against the 2900. I got a chance to hear the 2400 and they sounded great I hadn't heard headphones sound this good straight from an mp3 player before and I've owned a few of the popular headphones said to sound good unamped. I was wondering if the 2900 have...