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'New' output-stage powersupply for my MA-1/3.1s

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Posted on June 27, 2019 at 12:59:56
jeffreybehr
Audiophile

Posts: 5441
Location: Phoenix, Arizona
Joined: December 10, 2004
Contributor
  Since:
December 13, 2004
Certainly not new in design, just a few new parts.. Here's what my '1s have now; Ralph told me that these were the PS upgrade when mine were built.

At the recommendation of a trusted 'guru', I've ordered Mouser's United Chemicon 27000/160s.. My advisor wrote that while he didn't LOVE the sounds of these U-Cs overall, they're better than the old Corn.-Dub.s and are both available and affordable.

I'll be paralleling each of the big ones with a BlackGate* 470/160 and a biggish film cap or two; I'm currently using a single 1uF SoniCap Platinum...

Ain't this compulsion...er...hobby fun?!?!?!?!

FWIW I have discussed the substance of this upgrade with Ralph. :-)

BTW, if anyone wants my 4 original Corn.-Dub. caps for the cost of Priority Mail, send me a PM.

* I have 6 of these left from my small stash; I'd use 4 per amp if I had 8.
.

 

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RE: 'New' output-stage powersupply for my MA-1/3.1s, posted on August 6, 2019 at 13:48:41
bk12
Audiophile

Posts: 74
Location: FL
Joined: October 21, 2004
Nice upgrade-thanks for update. Glad you kept the MA-1s.

 

TY; me too.. Haven't installed anything yet., posted on August 6, 2019 at 19:41:15
jeffreybehr
Audiophile

Posts: 5441
Location: Phoenix, Arizona
Joined: December 10, 2004
Contributor
  Since:
December 13, 2004
Will post pics after I do.

 

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