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Old 13th November 2002, 11:44 AM   #1
Electrons are yellow and more is better!
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Default Coph Nia MC Amp from Sweden

http://hem.fyristorg.com/cophnia/phonoA.html

Check out this MC amp.

Anybody who knows anything about this amp? Nice photos!

Price tag 11500 SEK (=1230 USD)
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Old 13th November 2002, 02:12 PM   #2
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Default MC HEAD AMP

Hi,

This must be a brandnew company.
I've never heard of them before and I doubt the product is already distributed worldwide.

Maybe someone living in Sweden might check it out.

From the pix on the website I could spot a number of ICEL coupling caps.

Glad to see they like those too.
I said it before:if you want a good cap and don't want to pay for the hi-fi parts stuff,these are among the best you can find.

Cheers,
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Old 13th November 2002, 02:37 PM   #3
hifi is offline hifi  Sweden
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Hmm,

they are stationed here in gothenburg..strange i never heard of them...well they seem to be members in "leg bending club" (check the resistor mounting)

Looks like Elfa is ther parts supplier btw...

/micke
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Old 13th November 2002, 05:07 PM   #4
Electrons are yellow and more is better!
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Default Re: MC HEAD AMP

Quote:
Originally posted by fdegrove
This must be a brandnew company.
I've never heard of them before and I doubt the product is already distributed worldwide.
Have you checked his distributor list?
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Old 13th November 2002, 05:09 PM   #5
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Default YES

http://hem.fyristorg.com/cophnia/dealers.html

Do you bite?

Bye,
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Old 14th November 2002, 11:42 AM   #6
Electrons are yellow and more is better!
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When I look at the amp I wonder one thing: Why doesn't Dan Blom use double sided boards? If the product costs over 1000 USD, isn't high quality pcb's a must?
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Old 14th November 2002, 12:20 PM   #7
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Well, if one side is enough, then I see nothing wrong with a
one-sided PCB, and there does not seem to be any jumpers
on the board. What worries me more is that it seems to use
the cheap type of IC sockets, but I may be wrong; it is not
easy to see this on the pictures.

Does anybody have any idea what op amps they are using?
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Old 14th November 2002, 12:33 PM   #8
halojoy is offline halojoy  Sweden
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we've better let somebody of us pretend to make a review
of the amp,
so we can copy the schematic,
and see where it all went wrong
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Old 14th November 2002, 03:50 PM   #9
Electrons are yellow and more is better!
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Quote:
Originally posted by Christer
Well, if one side is enough, then I see nothing wrong with a
one-sided PCB, and there does not seem to be any jumpers
on the board. What worries me more is that it seems to use
the cheap type of IC sockets, but I may be wrong; it is not
easy to see this on the pictures.

Does anybody have any idea what op amps they are using?
I series production you don't need at sockets at all! It adds nothing but cost and bad contact! I think the pcb type is a matter of visual feeling, also adding ground planes is a good idea in many senses. If you (or I!) buy a gear for >1 kUSD I demand immaculate electronics. Single sided pcb's is cheap!

Opamps, I think most of the parts comes from ELFA www.elfa.se . AD797, LT1028, LT1115 maybe?
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Old 14th November 2002, 04:30 PM   #10
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Quote:
Originally posted by peranders


I series production you don't need at sockets at all! It adds nothing but cost and bad contact!
Unless they are using cheap op amps and want to make it
easier for tweakers.
I agree, it is probably a prototype in the pictures, but still, it
doesn't look good with bad sockets.


I think the pcb type is a matter of visual feeling, also adding ground planes is a good idea in many senses. If you (or I!) buy a gear for >1 kUSD I demand immaculate electronics. Single sided pcb's is cheap!
[/QUOTE]

Maybe they have some good reason for not using ground
planes, but probably not, more than to save money. Sure, one
should expect a lot for that price, but I wonder how many amps
for that price really are immaculate. I was almost shocked when
I saw schematics of the Bellini and Donizetti amps, and that is
one of the reasons I have ended up on this forum. It seems one cannot expect much even in that price range.




Opamps, I think most of the parts comes from ELFA www.elfa.se . AD797, LT1028, LT1115 maybe?
[/QUOTE]

Yes, it would be surprising if it is not one of those, but it would
be interesting to know which one. Why do I get a suspicion
that they have taken a design from the app notes of one of
these op amps and just added some good caps and a nice
enclosure.

BTW Per-Anders, I think you recommended using either of
the LT amps in your phono amp? Why not AD797? Have you tried
it and didn't like it?? There seems to be a number of
commercial designs using AD797, but I haven't heard of one
using either of the LT amps, so it would be interesting to know
you reasons.
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