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Lupulroz 9th October 2012 04:18 PM

RD50 - superdac with ES9018
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Here it is some info on our future dac RD50, a highly integrated dac with USB, S/PDIF, AES/EBU and I2S/DSD inputs. It features remote control, alphanumeric display, access to ES9018 registers via user interface (a cool feature for those who want to play with ES9018 capabilities in real-time).
With the mighty XC6SLX16 Spartan6-fpga as digital front-end featuring custom digital filters (much better than the ones inside ES9018), an asynchronous FIFO and digital receiver controlled with SI570 digital programmable clock, the module can be configured in a variety of ways. The outputs from ES9018 are directly available for any suitable output stage.
With all rectification and low noise regulators on board, all that one needs to do is to apply the AC voltage. No more myryads of extra boards for USB, reclocking, supply etc - just a simple but very powerful unit - with very short signal paths for perfect signal integrity.
Any comments/thoughts are welcome.

Lupulroz 11th October 2012 05:39 PM

Some of the RD50 features :
- DSD over USB
- DSD over I2S port (lvds)
- up to 384K(PCM) on I2S port (lvds)
- CCHD-575 (100 MHz) master clock for asynchronous dac operation
- Cascaded Dual digital PLL
- remote control with source selection, volume control, settings
- variety of digital filters (filters inside Spartan6 and ES9018 can be switched on and off)
- 4x20 alphanumeric display
..and the list can go on. Due to the fact that firmware is under developement, I let the list open for any ideas.
Also, if there is interest for this dac module, please express it here, it can have a good impact on final pricing.

merlin el mago 12th October 2012 04:51 PM


syklab 12th October 2012 04:55 PM

Sounds interesting, what is the price and ETA ?

Lupulroz 14th October 2012 12:48 PM


Originally Posted by syklab (
Sounds interesting, what is the price and ETA ?

Projected price is 399 euros for the board. It will be available in a few weeks.

livingstone 15th October 2012 11:21 AM

It will be only two-channel dac or multichannel configuration is also possible (maybe in some future revision)?

Lupulroz 15th October 2012 02:11 PM

This module was designed for absolute performance for 2 channels. A multi-channel version is totally possible - but a new module will be born then - if multi-channel is wanted enough. :)

Samtmatthews 22nd October 2012 03:37 AM

Will toslink optical inputs be available?

Lupulroz 22nd October 2012 12:12 PM

Current hardware revision isn't supporting toslink. However, I can take this into consideration if people still want optical input(s).

ThuyTN 22nd October 2012 04:22 PM

May I ask what regulators are you using for the RD50?

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