i wouldn't want to take the cover off the amplifier. I am not sure WHAT they have done inside, but as i have stated earlier (and also confirmed by the buyer of my 6005 ATI), the ati is forward sounding when compared to the classe, mcintosh, pass labs or mark levinson. If you like clear, crisp and slight brightness, you will love the ATI. HOWEVER, this amp likes to be cranked up in order to fully enjoy it. It doesn't really shine when you are listening at low volumes like the mark levison and pass labs do.
I can now finally tell everyone out there that the mark levinson h series ROCKS and excels both, in high and low volume levels. It sounds SPECTACULAR and has unsat all the 30 something amplifiers i have owned. I don't have to even debate this. It is a clear improvement over anything else i have heard. Although ATI might be still producing mark levinson or not, they did SOMETHING inside that is different and strictly exclusive to levinsons and this specific tweak is perhaps something that the ATI simply CAN NOT do to their own amplifiers or else there might be some sort of a lawsuit involved and a lot at stake. It is no different than saying Chevy builds the Corvette z06 and the Camaro and although the Camaro has the same engine as the Corvette, the vette has milled heads, a different cam, better exhaust manifolds,etc,etc because it is targeted to exclusive buyers who are willing to pay more. They couldn't do the same EXACT engine in the camaro as they do in the z06.
Could ATI make the same levinson amp and badge it their own? absolutely. They have the formula to make levinson amplifiers happen, BUT they can't risk that. I am sure if they came out with an amp that is IDENTICAL to the mark levinson sound, they would get a call from Mark levinson immediately and things won't be pretty.