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DPA little bit dac modding (7350 dac, ym3623b receiver)
DPA little bit dac modding (7350 dac, ym3623b receiver)
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Old 30th March 2005, 07:47 PM   #11
ash_dac is offline ash_dac  United Kingdom
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Hi John,

At the moment the little bit sounds the best compared to my cd players, and provides me with a 'reference'.


I have looked on ebay, and there are some DPA mains filters on there but I think they will cost more than the dac themselves!

http://search.ebay.co.uk/dpa




Regards,


Ashley.
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Old 31st March 2005, 06:20 PM   #12
ash_dac is offline ash_dac  United Kingdom
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Hi John,

In reference to the Deltran system. Was this type of design actually held under a patent by DPA or any other company?

Following on from your advice on 128fs transport, I have attached a summary diagram .


Are there any potential problems with the clock lock feedback system?

Does it achieve some kind of equilibrium, and is this the 'clock lock' ?



Kind regards,


Ashley.
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Old 16th September 2005, 03:42 AM   #13
Ruach is offline Ruach  Singapore
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I just got myself a DPA Bigger Bit.

It is pleasant and easy sounding and it uses a single DAC7 dac. I am not sure about the differences between the Little Bit and the Bigger Bit.

I will post a picture of the innards for comparison.
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Old 1st April 2006, 09:44 AM   #14
ash_dac is offline ash_dac  United Kingdom
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Cool DPA Pdm series 2

Hi,

Just purchased a DPA PDM series 2 dac.

Sounds very nice.

Inside it's more complex than the little bit but still uses the saa7350 dac.From what I can tell the changes are:-

-an extra transformer, and regulators for analogue stage
-op amp stage replaced with DPA's own surface mount opamp board
-optical input removed
-lock LED indicator.
-sticker on the front "7350", and "Enhanced bitstream chipset"

I'm not sure if the saa7350 is run at 384fs in this version.

Can anyone translate this information about DPA dac's ? (not the whole article but just a summary)

Online translators see to get muddled!

http://www.audio-gd.com/audio/two/new_page_5.htm
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Old 28th June 2006, 03:40 AM   #15
NjoyTHEMUSIC is offline NjoyTHEMUSIC  United Kingdom
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Join Date: Mar 2006
Location: Where the sheep scream for Mercy !!
Default DPA units & R.F

Hi John (& all),

I am really interested in what you have to say on the point of RF emissions on the dpa gear !!!

I'd love to know.....is there any way of shielding the RF in the related stages in the PDM2 ?

I was speaking to a mate the other week, and said, that although Rob Watts seemed to come up with particular design solutions...he never seeemed to take notice of other design factors (i.e. attributed sound quality in components, and now,it seems, RF problems).

My mate & I are both victims of the PDM2 variant ...

look 4ward to your comments (can I email you direct - pls ??)


-A-
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Old 5th December 2007, 02:09 PM   #16
whats gan on is offline whats gan on  United Kingdom
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Default dpa transport and dac on ebay will this dac be good

dpa transport and dac on ebay will this dac be good
the guy is selling the matching transport http://cgi.ebay.co.uk/ws/eBayISAPI.d...MESE:IT&ih=019
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Old 5th December 2007, 07:09 PM   #17
ash_dac is offline ash_dac  United Kingdom
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Default Re: dpa transport and dac on ebay will this dac be good

Quote:
Originally posted by whats gan on
dpa transport and dac on ebay will this dac be good
the guy is selling the matching transport http://cgi.ebay.co.uk/ws/eBayISAPI.d...MESE:IT&ih=019
Is that safe stuffing a torroidal tx in there ?

Also those like like oscons presumably botched onto the surface mounts.

BTW I have PMD100 HDCD chip bit it will probably be years before I use it
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