Ultra Plus Questions

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Bloodrose
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Posts: 31
Joined: Mon Sep 15, 2008 12:37 am

Ultra Plus Questions

Post by Bloodrose » Thu Apr 27, 2017 10:26 pm

What years were the Ultra Plus' made? I think mine is one of the last made..

Were any changes made to them during the run?
Also, I read that you can just put a quartet of matched tubes in them and not need biasing. Correct?

I hadnt used mine in awhile and plugged it up the other day.. Man, I forgot how good that son of a gun sounds!! Sounded wicked when run in stereo with my Quick Rod!!

Thanks for the help!

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