I own a pair of these amps and was curious if I could get some feedback from anyone who sent their amps in for this upgrade and how beneficial it was. Thank you in advance.
Jtimothya, I did the amp upgrade. What do you know of the 3.0 - 3.1 upgrade for the preamps - same thing? As important an upgrade? My 3.0 is of fairly recent vintage. Already have the power supply and VCap upgrades.
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