Well I have had the opti 2k,and 6k. They were reliable amps. People say they were over rated, but I think most do not notice they are rated at 14.4vdc. So in a normal install you will never get rated. I can not say if that 7k is good as it has a different case, so it may be built by a different Build house. Mine were first gen. that were built by zed audio for lanzar.
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