Twilo,
Hey I just happen to own both amps that you just mentioned. I am going to keep the lamm 2.2. While the rowland is a tube-like solid state amp, the lamm 2.2 is a hybrid that really mates the solid state and tube gear together seamlessly.
They are both excellent but with my emmlabs dac and transport and wilson speakers, the lamm is better.
I think that the rowland is one of the best all solid state amps ... just depends on the other equipment you got and how it all works together..
The weird thing is that while many people agree about the rowland in general and the 302 in particular, I am having a devil of a time selling it? Most of the time, I just get tire kickers who end up buying krell stuff. Well their loss.