Atma-sphere 3.0 to 3.1


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.
pubul57
Elberoth2, I've been listening to the Sashas with MA-1s a lot recently. They seem to work quite well together and is what I based my comments on the Sashas on over on the Speakers forum.

If you run the amps with less than the full complement, due to the low impedance of the Sashas the ZEROs will be helpful. Its a nice way to reduce the heat if you don't need the power and the Sashas seem actually fairly efficient. When I've been listening to them the VU meters on the amp barely move.
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.
Pubul57, thanks, I'm glad you like it. The 3.1 update reduces distortion at full power by about 90%; that translates to additional transparency with smoother delivery- its amazing how that can affect things, even in the bass, although a string bass has lots of high frequency harmonics.
We've got a lot of people that offer their favorites there, personally I don't play with the NOS tubes that much- I buy LPs and CDs instead :)

The Ken-Rad and Sylvania metal-based chrome-dome get the highest marks in that location, followed by the round-plate Tung-Sol, RCA red base, and the Western Electric.