I have the latest version of the Micro300 - just arrived. This one has all the details worked out as will all new ones I guess. I had used an earlier version on an outdoor gig with a Wizzy M line cabinet. While that Micro held up all night, it had to be run near full output to get the volume needed. It did so and braved hot tropical conditions without a wimper. I also briefly tested the original Micro300 against a Markbass LMII and slightly perferred the tone of the Micro for DB. Back to the new Micro. I ran it last night on a low to medium volume blues and classic rock indoor gig with no PA support in a trio-with-drums setting. The club has a good sized PA so the vocals got medium loud. I used a 5 string BG and the Wizzy M cabinet again. The Micro was FABULOUS! Getting more specific is very unscientific, and while I can't make direct comparisons, IMHO, this was about the best sound I've gotten in that room. And that's after 12 tries using a variety of EA, Markbass and Bergantino gear. This particular 5 string BG never sounded better. Lots of growl and punch and a very detailed sound. Not really pure hi-fi, nor vintage. Kind of a mixed studio monitor sound plus warmth. A tone I can't remember getting before and one you don't expect to hear on a bar gig. I have to think the big improvement in my sound was the Micro head. I'd also like to comment about the gain capability. Mike Dimin of EA said I might find this fully operational, latest series of the Micro to play louder. HE WASN'T KIDDING! I had the preamp at halfway, and the power amp just below half. And I had more gain than the early Micro running at near full on the power amp. I'd say the new Micros are easily a third more powerful that the early ones. In summary, congratulations to Gary and the EA team. When you add up what he's done at EA in the few short years he's been at this, he's built up quite a record of amp accomplishments. But this series, starting with the Micro300, might turn out to be his best...and a new benchmark.