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ARC sp 6b upgrade

Have Audio Research sp 6b and want to upgrade. Read and article about power and coupling caps and how they made the soundstage wider, deeper, and more focused, and improved the frequency extremes. Would love to improve mine.
Is there anyone that can help me?
Any information would be appreciated.


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Topic - ARC sp 6b upgrade - bluesman302 15:50:35 02/19/15 (2)

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