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Old 28th May 2004, 12:28 PM   #31
Nuuk is offline Nuuk  United Kingdom
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You are probably right. In fact it might be a nice exercise adding a switch to a buffered Gainclone, where the switch-on bypasses the buffer for listening to acoustic music.
That thought had crossed my mind too Carlos; it would give the best of both worlds!
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Old 28th May 2004, 12:29 PM   #32
lohk is online now lohk  Europe
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I did not realize that some of the images were clickable to enlargen. LM1875T well, ok, nothing really unknown. Like in the Finallabs amp.

Your opinion about the cap in the feedback path?
This must be the one between the psu caps.
The smaller one underneath the board is obviously the input cap.
Is it possible to identify the caps only from their stripped can (size, backpattern, etc.)?

I still do not see a sloppy design here, intended to fool the customers. If you do not like this amp, simply do not buy it.
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Old 28th May 2004, 12:32 PM   #33
moamps is offline moamps  Croatia
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Cheap design.
Input signal from second and third input goes thru two switches.
Fader pot costs ca 5€ (for cheap consoles). Where is P&G?
Output signal goes thru weak switch, wires are very thin.
This is obviously NI design, than input and output wires are dangerously close.
It's possible to find all parts (except case) in local store for ca 100€.

What is purpose off red cap on bottom side?

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Old 28th May 2004, 12:53 PM   #34
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Quote:
Originally posted by moamps
What is purpose off red cap on bottom side?
Zobel?
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Old 28th May 2004, 12:59 PM   #35
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IMHO,

Anyone planing on giving 2000€ for that piece of er... art, should audition a Plinius 8100 integrated (for example) which is not only cheaper but will play all sorts of music with authority, finesse and a lush that would make some wondering if it doesn't have some glass inside.




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Old 28th May 2004, 01:00 PM   #36
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What's this junk?
If a diyer here made a junk like that people would laugh.
But it's from 47Labs...

Small trafo, thin wires, non-shielded signal wire, cheap speaker terminals, kitchen-made PCB, bad soldering...
And that small board joining the wires?
Seams like a pre-historic radio.
And when I see those caps without jacket I get very suspicious...
They may say those are BGs or whatever.
I think that they may even be those cheapie-clear-green caps at 50c each that without the jacket anybody will notice.

A little more care on any commercial product is needed.
Even a cheap 100 Euro amp looks better than this.
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Old 28th May 2004, 01:03 PM   #37
moamps is offline moamps  Croatia
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Originally posted by Peter Daniel
Zobel?
Oups!
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Old 28th May 2004, 01:07 PM   #38
2Bak is offline 2Bak  Denmark
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Those good reviews of the Gaincard amp we read on SakuraSystem website, were they not the reason for us starting to build (in thousands...?) those more or less professional looking clones...?
http://www.sakurasystems.com/reviews.html

SakuraSystem was the first company who made amplifiers with opamps successfully, were they not?
Then people on the ChipDIY website and Peter Daniel here at diyAudio made the clones, and convinced the rest of us.

Why critizise them now?

To me this 4717 looks cool.

/Jan
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Old 28th May 2004, 01:07 PM   #39
Nuuk is offline Nuuk  United Kingdom
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Well of course it could be seen as a threat to all those who think that expensive binding posts etc actually make a difference!

I won't get into an argument about the price but it actually looks like an honest bit of engineering to me - refreshingly so for a commercial product.
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Old 28th May 2004, 01:09 PM   #40
MIB is offline MIB  Netherlands
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Quote:
Originally posted by carlosfm

And when I see those caps without jacket I get very suspicious...
They may say those are BGs or whatever.
I think that they may even be those cheapie-clear-green caps at 50c each that without the jacket anybody will notice.

A little more care on any commercial product is needed.
Even a cheap 100 Euro amp looks better than this.
I recall reading a reaction of Kimura somewhere, saying that he on purpose uses 'normal' components, so no audiophile stuff, because the sound of audiophile stuff would be to refined/artificial (do not recall exactly). Anyway, no BG's, but he doesn't pretend to use those as well.

Rob
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