Has anyone else done the upgrade from 3.0 to 3.1 - I have M60s of very recent vintage with power and vcap upgrades. It does not seem expensive. I do wonder what the changes are internally and how the perfomance changes, improves? with the upgrade.
Is that class A A/B switch on the M60 3.0? If it is, I never saw it before. I did have the power regulation upgraded 1-2 years ago, so I wonder if my unit would see much changed in the PS.
Ralph, what did you do my M60 amps? Sounds like I have a subwoofer!!!! I've never the acoustic bass sound so good, so present, and with such scale coming from my tiny 6 1/2" woofers. The upgrade, whatever it was, was well worth it.
I have not, but I have been listening to passives and they are great with the right amp. I think the Atma-spheres are not ideal for an external passive, but I suspect that with Ralph building it into the unit customized for the specific load and sensitivity of the amp and no ICs that it is great, of course you loose a bit of flexibility compared to an standalone preamp. Would love to A/B a MP1 versus the integrated passive volume control.
Ralph, does that mean it is best to have a source with lower gain so that you can turn the passive up further (less attentuation) - as long as it plays loud enough? By the way, how much does it cost to "upgrade" a pair of M60s with volume controls? Guess I should have thought of that when I upgrade to 3.1:)
That is good input (no pun intended) on output voltage. My CD player puts out 2v or 3.6v with a switch, and of course I can listen at the 12-2 position with the lower gain. Will you ever be demoing the "integrated" at a show (RMAF?).
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