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NOS DAC or CDP?

Recently I had to get rid of two of my CDPs (Jolida JD-100 and NAD C542) for finacial reasons. In doing so, I've had to go back to using my old Onkyo DX-C540 changer. Now it's not a bad sounding player for what it is, which is a Mid-FI changer circa late 90s. But both the NAD and Jolida certainly bested it in all areas of performance, and yes, I'm missing that level of performance. In any case am thinking down the road of either getting another CDP (possibly another NAD or used Jolida) or maybe going the NOS DAC route. I'm thinking of going the NOS DAC route as the Onkyo DOES have a optical output, and I think that it might make a decent transport, and give me changer capabilities. In addition, from what I've been reading the NOS DAC would probably give me the warm, musical presentation that I enjoyed with both the NAD and Jolida players. Also it appears that many of the NOS DACs fall within the "price point" that I would like to keep (less than $500). BTW, I consider myself more a "music lover" than an "audiophile", and going the DAC route would certainly be something new for me. Anyway, appreciate thoughs and suggestions from the community on which road they might go down and why they so. Thanks.
cleaneduphippy
clio09
3,360 posts
 
You could pair the Valab DAC with something like the Monarchy DIP. The Monarchy DIP is a jitter reduction device that is used between the transport and DAC. Good news is that you could get both and still be within your budget. However, its another piece in the chain and requires additional cables.
cleaneduphippy OP
323 posts
 
Clio09,

Thanks for the "heads up" about pairing a NOS DAC with the Monarchy DIP. Sounds like an affordable way of dealing with a possibe jitter issue. Also I'll do some more research on the Valab DAC. I read a few things about it, and most of it positive. Btw, do they have a distributor in the United States?
muralman1
1,527 posts
 
I don't do anything about jitter. Maybe that is because I am using a NOS DAC. From what I have heard, OS DACs do need jitter control, because the digital filter introduces phase instabilities. On my system OS DACs sound horribly contrived, not like real music at all.
clio09
3,360 posts
 
I still am a big fan of NOS DACs even though I'm not using one right now. I don't agree with everything Muralman said about OS DACs, because again a lot is based on design. In my case my transport is slaved to my OS DAC so jitter is not really an issue.

I do agree that NOS DACs have a very organic or natural sound to them. Closest thing to analog IMO, but again if the design is done right. Audio Note and 47 Labs make some very nice NOS DACs, but they are out of the OPs budget.
shadorne's avatar
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shadorne
7,477 posts
 
From what I have heard, OS DACs do need jitter control, because the digital filter introduces phase instabilities.

Jitter comes from the digital interface connection between transport and your DAC. It is a universal problem that affects all DAC's, DSP's etc. It is unavoidable. Some DAC's use techniques to decouple the clock signal coming across on the digital interface => this can completely remove interface jitter in a good implementation such as the DAC1. (Of course the clock in the DAC itself will have some jitter itself - there is no "perfect" clock - however this internal jitter should be orders of magnitude less than what you get from any digital interface)

Phase issues occur when using brick wall filters in non-OS DAC's. The idea of an OS type DAC is to avoid the use of steep brick wall filters and the phase errors they inherently bring into the audible range.

Some people will prefer a more jittery sound - it will give more harshness and edge to the music and can help make laid back equipment sound more dynamic, exciting and revealing. (Remember that modern CD's are mostly hyper compressed to give a harsh edgy sound and some people prefer this - jitter is similar in the way it can affect the HF)
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