Here is something different :
http://www.diyaudio.com/forums/audiobyte-diy/219782-rd30-quad-multibit-d-converter.html
If you are competent in making your own board or can have a board made for you, I recommend adapting Sheldon Stokes' tube dac design. SDS Labs DAC Designs
You should substitute the CS8412 with a CS8414; you can substitute the very hard to get NPC SM5843 digital filter with a NOS module from Peter Beyer; The PCM63 can be substituted with the PCM1704 and; you can get rid of the entire tube I/V stage and its assoc. power supply and replace this with Lundhal amorphous core transformers. The adaptation isn't a straight forward PNP. You will need to make some track changes and change several components but these are not difficult to do.
I have such a dac in my system and the music is sublime. I have also heard a dac built using these components but utilising a very advanced layout and PSU and it easily beats even the most expensive dacs such as the likes of DCS etc.
If you are keen, PM me and I will share more of the "non proprietary" details with you.
You should substitute the CS8412 with a CS8414; you can substitute the very hard to get NPC SM5843 digital filter with a NOS module from Peter Beyer; The PCM63 can be substituted with the PCM1704 and; you can get rid of the entire tube I/V stage and its assoc. power supply and replace this with Lundhal amorphous core transformers. The adaptation isn't a straight forward PNP. You will need to make some track changes and change several components but these are not difficult to do.
I have such a dac in my system and the music is sublime. I have also heard a dac built using these components but utilising a very advanced layout and PSU and it easily beats even the most expensive dacs such as the likes of DCS etc.
If you are keen, PM me and I will share more of the "non proprietary" details with you.
Actually I heard it. I'm part of the design team
Sound signature... it depends on the configuration chosen; for example, with digital filter switched off, it's actually a NOS dac; I like it like this with sample rates 176-192k; on lower sample rates SQ is better with digital filter on - we put a tremendous amount of work in the filter, which is way powerful than anything inside usual chips.
Another option is the I/V stage, as the board output is current only. With partner board RD30IV, it sounds like "multibit on steroids"
with tons of resolution, layering and naturalness.I also tried with a (modified) Aikido tube boards I/V with Lundahl interstage transformers and I was quite amazed by the results; the smoothness, liquidity, bass performance and vocals are the strong points.
However this is my subjective evaluation.
Hi Lupulroz,
got some prices from your site today & although it looks good but 1230 euro for the kit is a little pricey for me when there aren't any independent refuse to give me some prospective.
Thanks Ihear21khz but i'm looking for a solid state dac really.
I've been looking at the sonic crafte modded Schiit Bittfrost
What do any body think think of that DAC???
got some prices from your site today & although it looks good but 1230 euro for the kit is a little pricey for me when there aren't any independent refuse to give me some prospective.
Thanks Ihear21khz but i'm looking for a solid state dac really.
I've been looking at the sonic crafte modded Schiit Bittfrost
What do any body think think of that DAC???
Could be, but considering what's in the package, it could be considered cheap as well
just a matter of perspective..There is no arguing with that logic & don't get me wrong It does appal no doubt it's just being a novice it's hard to make an informed judgment so I am left with judging on th oppinions of others and reading betwen the lines & filling in the blanks.
I will keep a watch for it though & try to talk to people who have bought it.
What would b the best transformers you could use with this also.
Cheers
I will keep a watch for it though & try to talk to people who have bought it.
What would b the best transformers you could use with this also.
Cheers
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