Audio Research VS60 amp Matched tubs

I have two new matched 6550 tubes and two old tubes on VS60 amp right now. Do I need to buy QUAD matched tubes or I can just buy other two matched tubes to replace old tubes?

Regards,
Eddy

eddy104-03-2016 1:07pm

Showing 2 responses by yogiboy

yogiboy Details Discussions Posts This discussion Message User 5,812 posts 04-03-2016 at 01:46pm Copy Comment URL Report Comment Edit Delete Two are fine! As long as they are the same brand and biased the same!
yogiboy Details Discussions Posts This discussion Message User 5,812 posts 04-03-2016 at 05:07pm Copy Comment URL Report Comment Edit Delete I don’t think you can do that. Your amp uses 6550 tubes. You can give ARC a call to confirm this! Here is the manual! http://www.audioresearch.com/ContentsFiles%5CVS60%20Manual.pdf

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