That would have been my guess, too. Is your experience with the 800HD different from J-Basso's?
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Hard to say since I had the 500 combo and the 2x10 extension. Now I have 2 2x10 cabs and the 800. It is my belief that the separate cabs are a bit "tighter" than the combo. The frequencies on the eq are the same, the gain does seem a little bit more tame or graduated, which is good.

