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Should be a very nice dac Ozcall, R2R Multibit Ladder Dacs, no S/D rubbish, should be a real killer dac, if they did the right thing with the I/V and buffer stages.


They've always been avid proponents of R2R Multibit dac in the past when they made very expensive naked boards for the diy'ers, aways got great feedback from purchasers for great sound quality, sadly that site of theirs has long gone, no more kits anymore.


 


 


Cheers George


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OK so they're still doing them, seeing your into DIY maybe you should think about the RD30 DAC and the RD30 I/V, I had the schematic of the I/V somewhere (promissed never to show it) but for memory it was a very nice design, not your typical opamps with feedback, but well thought out discrete grounded base with proper loading (low impedance) not using resistors for the output of the PCM1704 (RD30 dac)

 

Cheers George    

 

 

Just looked for and found the schematic for the I/V board, and it is very good, all what I said above and it's all discrete I/V and buffer, dc coupled from dac output to i/v to buffer to rca/xlr outputs.  (with opamps as dc servo's)

Edited by georgehifi
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OK so they're still doing them, seeing your into DIY maybe you should think about the RD30 DAC and the RD30 I/V, I had the schematic of the I/V somewhere (promissed never to show it) but for memory it was a very nice design, not your typical opamps with feedback, but well thought out discrete grounded base with proper loading (low impedance) not using resistors for the output of the PCM1704 (RD30 dac)

 

Cheers George    

 

 

Just looked for and found the schematic for the I/V board, and it is very good, all what I said above and it's all discrete I/V and buffer, dc coupled from dac output to i/v to buffer to rca/xlr outputs.  (with opamps as dc servo's)

Thanks George , both items are already on my 'to buy' list :)
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Hi George , kits are still available : http://musicaltech.com/. I recently purchased the SATA TO I2S board to build my own transport , with great results.

I went to their website a week ago and was down at the time, glad to see it back online!

I'll have an IV with DC coupling and opamp servo output to build in a few weeks ... But it will be running off a ESS DAC so George won't like that ;)

Edited by hochopeper
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  This Rockna Wave Dream has a 5ohm!!!! output impedance, this is great, means it has a very strong output buffer, (probably uses the same discrete I/V and output buffer as the RD30 i/v)

And it also has a 250 step .5db increment volume control built/programed in, hopefully done in the digital domain before the dac, then say good by to your preamp as this baby will drive any poweramp direct, with meters of interconnect without a problem being only 5ohms output, and sound better for it, by being the most transparent way of driving the amp/s.

 

 

Ozcall, what is the price of this ready to buy Wave Dream?

As his RD30 dac and i/v boards are not what a diyer's would call cheap.

 

 

From the review, this is where R2R Multibit done right has it all over the (yawn) SD type dac chips.

 

"Summary

Bass

The bass is incredible as it has exploding impact, excellent detail, goes very deep when it should and seems to be controlled by an iron hand. Also it seemed very natural to me and I often had the impression I felt the material the drums were made of. I could feel the drums in my body, and no, I wasn’t using speakers, just headphones.

Mids

One of the best mids I have ever heard in my life. All is at superlative with this DAC. Every instrument is alive and kicking and the voices are out of this world. You can hear every tone in the singer voice, every emotion, passing it to you, making you feel the song and the emotions he wants to transfer.

Treble

As you expect the treble is top notch as well. The sparkle is crystal clear and full of life and extension.

Transient response

This is another breath taking aspect of Wavedream as it has very fast and natural decay and incredible attack."

 

 

  

 

Cheers George     

Edited by georgehifi
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