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.
I had the update from the Mk.3 to Mk. 3.1 done to a pair of silver edition MA-1's. The noise floor was lower and the imaging was more precise, wider and deeper than the Mk. 3. It's cheap and very worthwhile.
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.
Got my MP-1 back from the 3.0 -> 3.1 plus TFTF -> CUTF VCap upgrade a few weeks ago, so still evaluating and will blog about it later this year. I'm not sure the caps have entirely formed but, to my ears at this point, these changes make for an upgrade more significant than the amps, which I agree is economical and effective!
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