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Audio Research Ref 6 vs 6SE

Would like to learn about the difference between ARC Ref 6 and 6 SE. Information in the web said that 6 SE involves upgrading 18 capacitors and 14 runs of wiring. And, owners of ARC Ref 6 can upgrade it to 6SE at a cost of $3,000.
How far is the actual difference in listening? Does it worth the money to upgrade? Would dealers in different parts of the world able to do the upgrade which seems to be done on site?
cclee2022

Showing 2 responses by fsonicsmith

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fsonicsmith
983 posts
 
I don't understand all this McIntosh talk. https://www.whathifi.com/us/news/audio-research-sold-by-mcintosh-group-to-former-sales-director
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fsonicsmith
983 posts
 
I apologize for hi-jacking the thread but I am approaching 1500 hours on my Ref 6 and will be buying 6H30PI's. Seems like my choices are ARC and Upscale. Any other suggestions for top quality versions of this tube?
I love Upscale for tubes so I will probably just pull the trigger with them. They offer an "ARC selection" grade but are out of stock of EH version and just have the Sovtek version (which is likely fine). 
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