Used the '64 with DTFs last night to keep playing them in. Used the AMB most of the time and was very happy. Used the Ampeg tubes and did like it a tad more. But was happy with the ABM. If I had a hour to just adjust each aspect of the EQ and notice the impact I could get closer to the Ampeg, but it just has some extra tube magic going on that I don't think can be completely replicated. I'm definitely getting closer to where Ashdown could be my main head. Fortunately I don't have to decide and can enjoy both.
Odd thing: The A on the E string or open A sounded bland, or less full with both heads. Which was what I was noticing Sunday during one song. I thought it was just on the E string, but not so. Anyone ever encounter something like this?