And employs JRC NJM2746 rail to rail Dual OpAmps with a low noise of 10nV/√Hz* Stacked a/d converters. To make a significant improvement in dynamic range, a stacked a/d converter architecture can be used. In this approach, the signal is split into multiple paths, each with a different gain before input to the a/d converter. If, for example, three a/d converters are used, they would capture large, medium and small signals respectively and the final output would be selected from the most appropriate a/d converter.
I owned one of those for yearsI'll raise you:
Beast of a head, friend had one with a 2 x 15 JBL cab. Shook the 14th floor of his high rise at full volume. Lol