Hohner has changed the Blues harps a while ago - you can exchange the set of reeds now. In fact you can do this with every Hohner model that is labeled "MS"=modular system.

They did this to with the Marine Band, but apparently it was no success - they went back to the old model but recently improved it again. Since I don`t have one of the new ones, I can`t tell you the difference.

Otherwise the Marine Bands sound was slightly "thinner" in my ear compared to the Blues Harp (only slightly!), probably due to the different design of the cover plates.

Best
Ernest