Upgraded my amp configuration as well. Had an sd4 powering two rev 410's and upgraded to two sd2's, one on each rev 410. The result - unbelievable clarity and headroom. Hope the videos work. Also, rearranged the amps.
https://vimeo.com/134614515
https://vimeo.com/134614608
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https://vimeo.com/134614515
https://vimeo.com/134614608

Sent from my iPhone using Tapatalk
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