IMO, they have a pretty different sound. BTW, its EMC-1. the EMC is a more "tube like" sound, even though the AA actually has tubes. I found the AA to be quicker and more detailed, not as warm. The EMC was great when I had SS amp, but got to be too much of a good thing when I went to tube amplification, esp. with Vandy 3A sigs. The AA is more neutral for sure, but not analytical. IMO, but I must note that I did not have them in the same system or at the same time.
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