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Atma-Sphere MA-1 filter cap upgrade

Hello,
Has anyone heard the filter cap upgrade (via Atma-Sphere) that available for the MA-1. What sonic improvements does it make? I have read that it helps improve lowend authority -- I have Quad 988s, would I notice this added boost?

i.e. - Atma-Sphere offers several upgrades for the MA-1 amplifier, including V-caps, caddack resisters and so forth, the upgrade I'm specifically interested in is a separate upgrade -- whereas the filter caps from the MA-2 is utilized in the MA-1 and as a result the power switches and rectifiers are also utilized.
grateful
grateful's avatar
grateful OP
104 posts
 
Thank you Rushton. I have talked to Ralph and he is wonderful to speak to. He told me the same thing, I was just wondering what others were experiencing.
grateful's avatar
grateful OP
104 posts
 
thanks
rushton's avatar
rushton
2,445 posts
 
Grateful, if you move forward with the update, please share with us what you hear afterwards. Best wishes,
grateful's avatar
grateful OP
104 posts
 
OK... I've had the MA1s back for a few weeks now, and WOW!!!

The biggest difference is in the low end response -- bass and drums sound truly realistic (depth, tone, decay, impact). There is more air around instruments and more natural tone overall. Sax is especially sweeeeeettttt (I don't mean overly lush but the tone is just spot on). Piano sounds more like the percussive instrument it is -- really uncanny, the improvement, I thought I had a good piano presentation before, but now its amazing.

Now, I did have the amps brought from mkii to mkiii also with full V-Caps -- so there is alot going on here -- my uneducated guess is; the lower end response improvements were reflective of the Power Cap upgrade.

Yes, the Power Cap upgrade is expensive, but the extension in bass I hear now along with the improved impact is very noticeable -- literally, its like I added a sub element to my Quad 988's.

William
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