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Cambridge 640P Power Supply Upgrade

So I bought a Pangea P100 for my DACMagic (made it better)and figured, hey, one "wall wart" down, lets see if my 640P can use some improvement. So I ordered another Pangea (the name sounds like a holistic skin treatment, which I think there actually is). After a couple of days of use the Pangea PS seems to kick the 640P up to another level altogether...I now can highly recommend this cheap tweek. Interestingly (to me anyway), the stock 640P "wart" PS ran kinda warm and the P100 doesn't. I think that means something, doesn't it?
wolf_garcia
williewonka
3,075 posts
 
Just in case anyone is still interested in this little gem and possible upgrades here's my 2 cents worth.

I built may own power supply for both the dacmagic and phono stage.

I used a 2amp toroid transformer for the phono stage and a 5 amp toroid for the DACmagic - lot of headroom:-)

I used Kimber speaker cable for the 12 v power supply cable with xlr connectors and a furutech 14 gauge mains power cable. I also use solid silver interconnects on both

Used with a really good power supply these units perform way above their class - outperforming units many times their modest price

Since they are a 12 v AC supply they only require a good transformer - no rectification is require, making it simple to create a good diy supply

A DIY supply like mine can be made for around $200, but replacing the two units for better sounding sources would cost considerably more
wolf_garcia OP
6,708 posts
 
The Pangea P100s are now selling at Audio Advisor for around 70 bucks each.
gregm
3,405 posts
 
Given an asking price of $70 for aftermarket warts, Wonka's diy power supply looks like a no-brainer. If I understood correctly, all that project entails is to purchase the tranies and then plug the secondary to the equipment...
williewonka
3,075 posts
 
Quality power cords are paramount and one thing that I found improved the sound a lot was replacing the fuses I originally used with small push button breakers - and a nice case :-)

The first attempt was a 12v lighting transformer - it improved the sound a lot over the supplied units.

Once I had proved the improvements we're possible I then proceeded to use quality components across the board

If you are into DIY then it's fairly simple, otherwise go for the Pangea - it's a pretty good unit and will improve the sound over the supplied units from what I have read. They also provide a DC supply for the new dacmagic +.
williewonka
3,075 posts
 
Wolf - did you find that using the Pangea caused the 640p and the Dacmagic to run cooler?

My 640p is now at room temp (cool to the touch) and the dacmagic runs at about half the temp it used to.

Both units are powered on 24/7
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