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helix hxa 400 mkii
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  1. General Car Audio Discussion
    Hey there, Anyone out there know the difference(s) between these two Helix amps? The HXA 400 and the HXA 400 MKII. Any different specs or build differences? Years produced? Is one just an updated model of the other? Etc. Been searching around the interwebs and now my head hurts! And what may...
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