Quote:
Originally Posted by JJinID
...I'm still using the Sophias with mine but intend to branch out to other NOS 6SN7 tubes when time and budget allows.
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You won't be disappointed! Almost any of the 1940's VT-231's will beat them (at a cost). One problem with NOS 6SN7's is that they can be microphonic, especially a problem in the Oppo with its moving parts. Buy from a reputable vendor with a good return policy. audiotubes.com, tctubes.com, tubeworld.com are some but there are a number of other good ones as well.