Had a chance to try the iAMP300 and the Markbass LMII heads using the Wizzy 10 as the reference cabinet. Used both DB (Cleveland/FC) and BG (Alembic 5). Just playing solo, but in a good sized lively room. Not much difference on BG but on DB... The iAMP300 had a fuller, darker, more acoustic and true tone on DB than the LMII. I like the LMII tone, but it's not a true one to my bass. Kind of electric sounding. Live band testing definately warranted. But if the results hold up... Hmmm....The LMII, till now, was my favorite DB head. Better by a tad to my ears (and using different cabinets many moons ago) than other great heads by WW and AI. And going into this trial, I expected the LMII to come out on top again. But I think this little 2 pound friend might set a new DB benchmark for me.