Have a pair of these standard mono blocks driving Vr-4. Very nice. Has anybody upgraded the passive parts in there and replacement tube reccommendations. Upscale audio looks good.
Its 2000.00 to upgrade to the 150. Way too much. They just run the tubes harder. anyway Mine sounds good in the triode mode on vr-4. Ultralinear dosent do it for me here. Tungram 12ax7 are nice for it also.
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