Question regarding Audio Logic M-34 DSM

Hi all,

I just picked up an Audio Logic M-34 DSM over the weekend and was wondering around when was this DAC produced? I understand that there were several models of the M34, including the DSB,DSM and latest MXL, but i wasn't able to find much info as to the lineage and evolution of the 34. Also, any specific info regarding the DSM would be appreciated.

Thanks in advance, Peter