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Sunfire Dying


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I have a Marantz AV7704 and Sunfire Signature 400 x 7 Amp powering a Gen 1 RF-7 5.1 setup. I am hearing some intermittent static in my left rear surround and have a feeling my amp is finally dying. I am seeking recommendations for a new amp. I definitely run this amp very hard sometimes and am wondering how many watts I need in a replacement. I use if for home theater and when I demo my system to others I demo everything from Enter Sandman to the Centipede song from Knife Party.


Thank You all for your recommendations

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