First post here... Just had to pick up an MP-301 after reading Skylab's post. He is right about the 'boogie' factor on this amp. It works 'very' well on my Tekton 4.5 speakers in near field set up on either side of my iMac. I also drive my 701's periodically with it too, but the Fostex drivers play so well with the 301 that almost all free time is spent listening with this set up. Have not rolled any tubes as of yet but will once I become quite intimate with the stock sound. I expect a nice upgrade here...
Have also driven my Tetra 120U's to very high levels in second system. These are 89db sensitivity , I believe, and the amp had all kinds of gain available.
Garry, the amp designer, was kind enough to burn in for a day to test it out and then hand deliver it to a local (to him) coffee shop during a family road trip to Edmonton. Previous amp in computer set up was Sonic T-amp. I think it will not find it's way back onto my desktop now.