just bought me a used AMT 1D that was built after 2001 so it's the newer line but the cabinets are the same design. I will improve it some more with dakiom feedback stabilizers and the fact I have many sound processors like dbx, bbe, behringer, it will definitely have very little limitations cause I can alter the sound in which so many seem to have their limitations. I also acquired an AMT 10B, and with my ohm walsh 300 mk 2 rebuilt by ohm, at least i can switch. I also have eminent tech lft 8a's and a maggie 2.5r's with new ribbons, I have the best of both worlds and if i ever find space, i can always pull out my DINOSAUR, an ACOUSTAT SPECTRA 33 the electrostat the size of a room!