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Old 15th February 2005, 08:39 PM   #11
jleaman is offline jleaman  Belgium
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900$$ for your intergrated amp.. Um does it come with a horse or a bar of gold. why so much ?
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Old 15th February 2005, 08:48 PM   #12
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Because some people are ready to pay that much. Besides, I can't compete with Audio Zone that sells a similar amp.

It is still cheap comparing to what the buyer of my first GC is asking for it now : http://cls.audiogon.com/cgi-bin/cls....ran&1112586391
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Old 15th February 2005, 10:07 PM   #13
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Here's the finalized SE LM3875 board. I further changed the rectifiers board layout. My recent experiments indicate that placing 100u BG N cap on the amp board gives best results in overall tonality, resolution and musicality. Those caps are fine by itself (and I'm not using any other caps presently when powering from AC supply). On the rectifiers board there are pads for additional filter caps, and one can use anything between 1000u and 10,000u (up to 35mm dia.). There is a space for snubber components as well, and also a bypass cap (200, 300, 400 mill spacing). The LED output is available. The size of the board has not been changed, as I'm implementing them in many different projects and actualy the size does matter.

The board went into production this week, and expected delivery is Tuesday. I decided on gold plating, with clear solder mask and black silkscreen. As it is a limited edition, I ordered only 50 pcs, which will be numbered (just jocking)
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Old 16th February 2005, 12:28 AM   #14
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Default Re: DAC details?

Quote:
Originally posted by sanjeev
I am waiting for your DAC kit. When do you expect to start taking orders, and how much will it be?
Here's the current DAC layout. I'm pretty much ready for fabrication and will probably go with dark blue mask and yellow silk.

The DAC has been optimized through many versions and parts substitutions. It is quite simplified circuit, but as simplicity allows, the sonic presentation is very distinct, direct and clear, with wonderful sound free of the electronic veil imposed by more complex circuits. Those who like well implemented chip amps, should definitely enjoy this DAC as well.

I decided to keep things simple with regards to assembly, so the whole DAC is contained on a single board. With 48VA Hammond trafo, dual raw supplies, common mode chokes and resistors for CLRC filtering, the PS is less simple, but it compares very favourable against batteries, and most people actually prefered direct AC connection. I decided not to use any additional bypasses besides low value electrolytics mounted directly at the chips pins. A lot of care went into optimizing the input circuit, with minimum signal length, careful trace routing and proper grounding. BNC input and RCA outputs are also directly board mounted.

A follow up to an earlier review of a similar DAC can be found here: http://www.6moons.com/audioreviews/audiozone3/dac.html
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Old 16th February 2005, 01:29 AM   #15
jleaman is offline jleaman  Belgium
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peter i hope that didn't sound rude i was just asking that is all. i didn't know you could sell them for that much i can see you make great products..


now to buy a dac board from you
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Old 16th February 2005, 01:46 AM   #16
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I'm queueing for a DAC board / kit.

And those madrone burl side panels are about the best looking things I've ever seen. Me want.
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Old 17th February 2005, 07:17 AM   #17
sanjeev is offline sanjeev  United States
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Default I'm in line for a DAC kit too

Looking forward to it!
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Old 17th February 2005, 09:50 PM   #18
fireman is offline fireman  Canada
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Default Might as well take a number right now...

Have you estimated the price for the DAC kit ?

Also, why choose a BNC input connector ?
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Old 19th February 2005, 11:29 PM   #19
fireman is offline fireman  Canada
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Default Re: Might as well take a number right now...

Quote:
Originally posted by fireman
Have you estimated the price for the DAC kit ?

Also, why choose a BNC input connector ?
Hey ho Peter,

Are you still there ???
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Old 19th February 2005, 11:57 PM   #20
jleaman is offline jleaman  Belgium
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Peter you must be really swamped. : O ) my offers still stand. And any thing new on the dac stuff we have been talking about..
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