[Currawong]

Quote:

Originally Posted by MadMan007 /img/forum/go_quote.gif They do look intriguing but you're looking at $1000+ for a DSP-1 DAC-19 and a C-2 with audio-gd discrete OPA which gives them a lot more competition, especially if one looks used. Then again there aren't a lot of half-rack pieces available in general on the audio market. I look forward to seeing some comments on these. New thread(s) needed for sure!

You don't need the discrete OPA if you buy them together, as the ACSS connection bypasses the opamps, giving the advantage of all amplification being entirely in the current domain.

 

[YtseJamer]

Quote:

Originally Posted by Who? /img/forum/go_quote.gif Any impressions on the new Audio-GD DAC-19(MK4)?

x2

 

[MadMan007]

Quote:

Originally Posted by Currawong /img/forum/go_quote.gif You don't need the discrete OPA if you buy them together, as the ACSS connection bypasses the opamps, giving the advantage of all amplification being entirely in the current domain.

lol OK take $25-30 off

such a huge amount out of ~$1000+! That doesn't magically put the set in a different price bracket. Not to mention that if you use an analog source with the C-2 as a headphone amp or preamp you might want the discrete OPA.

 

[Currawong]

Quote:

Originally Posted by MadMan007 /img/forum/go_quote.gif lol OK take $25-30 off such a huge amount out of ~$1000+! That doesn't magically put the set in a different price bracket. Not to mention that if you use an analog source with the C-2 as a headphone amp or preamp you might want the discrete OPA.

Should you have thought otherwise, I wasn't suggesting anything about price brackets. Just thought I'd clarify that. Just that I'm sure people wont realise that the OPAMPs are bypassed when using ACSS. The majority of people aren't very technically-minded.

 

[Helmore]

Quote:

Originally Posted by Currawong /img/forum/go_quote.gif Should you have thought otherwise, I wasn't suggesting anything about price brackets. Just thought I'd clarify that. Just that I'm sure people wont realise that the OPAMPs are bypassed when using ACSS. The majority of people aren't very technically-minded.

Wouldn't that be a matter of reading comprehension instead of being technically minded?

It clearly says so on Audio-GD's site.

 

[FauDrei]

Quote:

Originally Posted by slim.a /img/forum/go_quote.gif I also disabled the dithering, because I felt I had more low level details with dithering off. It is weird that you heard the same effect on the DSP1.

Yes, it is puzzling.

I need more investigation on the effect of different data word lengths on DSP-1 dithering. There is a chance I've missed something crucial there. I will postpone my definite judgment on this because of that.

Quote:

Originally Posted by MadMan007 /img/forum/go_quote.gif They do look intriguing but you're looking at $1000+ for a DSP-1 DAC-19 and a C-2 with audio-gd discrete OPA which gives them a lot more competition, especially if one looks used.

$1K whereabout it is. Not small amount for average headphone lover. Still I think one of the best DAC/headamp combos you get around this amount.

 

[jimmychan]

I don't think the ACSS would bypass the OPA. I could hear the differences of OPA, Sun and Earth.

 

[Currawong]

Quote:

Originally Posted by jimmychan /img/forum/go_quote.gif I don't think the ACSS would bypass the OPA. I could hear the differences of OPA, Sun and Earth.

With the new C2? Set up how exactly?

 

[jimmychan]

Quote:

Originally Posted by Currawong /img/forum/go_quote.gif With the new C2? Set up how exactly?

Oops! I misunderstood something. The ACSS input of C2 will bypass the OPA, there is no need for a OPA if you connect to a ACSS output of a DAC.

 

[Pricklely Peete]

Yup..... IIRC without reading the page again it treats the ACSS stage of both units as one basically speaking, cutting out the extraneous or redundant parts of the DAC circuit for a purer "direct mode" pathway to the amp ACSS stages. This way there is only one conversion from I/V in the C2 output stages. I think I have the explanation right from what I understand of the description from the web page.

Peete.

 

[slim.a]

Hi everyone,

For those looking to upgrade their digital cable with the dac19mk3, I reviewed the Oyaide coaxial digital on a separate thread here : http://www.head-fi.org/forums/f21/re...-cable-469313/

 

[arcer63]

I've tried searching and have come up with nothing... But what exactly does the DSP-1 do? and what are benefits/drawbacks of applying it?

 

[slim.a]

Quote:

Originally Posted by arcer63 /img/forum/go_quote.gif I've tried searching and have come up with nothing... But what exactly does the DSP-1 do? and what are benefits/drawbacks of applying it?

The DSP-1 is a digital fitler (like the PMD100 and DF1704) that does the oversampling/filtering before sending the data to the the dac chip (pcm1704uk). According to Kingwa it is a much better digital filter than the pmd100 and df1704 but I haven't tried it so I can only speculate about its performance. It is too bad that the DSP module is not compatible with the old dac19mk3 or else I would have ordered one to try and compare to the other digital filters.

 

[regal]

Quote:

Originally Posted by slim.a /img/forum/go_quote.gif The DSP-1 is a digital fitler (like the PMD100 and DF1704) that does the oversampling/filtering before sending the data to the the dac chip (pcm1704uk). According to Kingwa it is a much better digital filter than the pmd100 and df1704 but I haven't tried it so I can only speculate about its performance. It is too bad that the DSP module is not compatible with the old dac19mk3 or else I would have ordered one to try and compare to the other digital filters.

The problem is the DSP-1 doesn't decode HDCD, so its not an apples to apples comparison. The older gurus pretty mostlyprefer the older chips to DSP based chips.

 

[regal]

Quote:

Originally Posted by slim.a /img/forum/go_quote.gif Funny thing, I already asked Kingwa the same question yesterday and obviously I got the same answer. Looking however at the internals, I noticed some changes (besides the DSP1 module) that are probably improvements over the dac19MK3. The main thing that strikes me is the fact that he seems to have added a clock near the digital receiver in his new designs (including the audio-gd FUN see here). I was always curious why the DIR9001 wasn't slaved to a low jitter clock (I believe I mentioned it earlier in this thread) but he seems to have adressed that issue. :

Has anyone found out what the clock is doing in the MK4? I know you can't slave a DIR9001 because it will get out of time with the transport. Is he reclocking or is this a PLL like tent labs? Is the clock present on the DF1704 boards?