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Old 1st April 2010, 05:12 PM   #1
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Default New Small DIY Gigawork Dac?

I am looking to buy and build the bigger gigawork dac .
Looks like gigawork updated the smaller dac based on a similar design, though I don't think it has upsampling.

Curious if this would be a better way to go. Some like the smaller gigawork DAC better & new version should be better.

I will do transformers out on it. Thoughts?

High Grade 24bit/192khz DAC with fully assembled kits - eBay (item 120551270004 end time May-01-10 02:48:28 PDT)
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Old 2nd April 2010, 11:30 AM   #2
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Looks like a good DAC. Uses PCM1798 which reputedly is better than the CS4398.

Not sure how you would use output transformers though. It is easy on the bigdac, but this uses SMD parts so no holes to tap into.

There is a good article on modding the old version here. Mods will still be valid for the new one:

http://www.lampizator.eu/LAMPIZATOR/...ampizator.html

Edit: thinking about it, if you bought just the DAC board and made your own quality power supply and high quality regulation. This could be a stunning DAC!

Last edited by RichLund; 2nd April 2010 at 11:52 AM.
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Old 5th April 2010, 06:29 PM   #3
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like the salas supply?

i don't know if the seller sell only the DAC board.

i'm interested for the DAC board.

3 output OpAmp will be not too much? into the old lampucera was only 1.
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Last edited by robertor; 5th April 2010 at 06:31 PM.
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Old 5th April 2010, 11:50 PM   #4
wwenze is offline wwenze  Singapore
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Quote:
Originally Posted by robertor View Post
3 output OpAmp will be not too much?
PCM1798 is a current-output DAC, the two opamps before the third one are for I/V conversion.
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Old 7th April 2010, 05:19 AM   #5
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Quote:
Originally Posted by robertor View Post
like the salas supply?

i don't know if the seller sell only the DAC board.

i'm interested for the DAC board.
me too
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Old 13th April 2010, 12:01 PM   #6
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the 2010 lampucera is completely different than previous DAC.
maybe the modding will be the same but i don't know.

ok, 2 OpAmp are for the I/V conversion(OpAmp conversion? sorry but i don't know what this project means) and the third is only for the output?
if so, the transformer will be connected to the last(THIRD) OpAmp.
i mistake something?
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Old 14th April 2010, 05:47 AM   #7
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bought yesterday.

the opamp for the I/V conversion can be replaced with?
the third i have the opa627 and at the moment will be ok.
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Old 15th April 2010, 08:53 AM   #8
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did you bought only dac board or everything, how much incl transport
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Old 15th April 2010, 09:47 AM   #9
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Just to clarify, what do you need to purchase to make this run?

I seem to get lost in the power supply end, what would I need to buy from Maplin or another UK store?
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Old 15th April 2010, 10:29 AM   #10
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i asked for the DAC only but they answer: NO!

total amount 74,99 usd / 55,03 euro.
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