Popular DAC that is known for its warm-ish sound?

ARC?  What is this, a company, a DAC model?  Can't find anything on it, except there is a company named ARC Audio which seems to be all about automobile audio.

Audio Note shows a bunch of DACs on its website, but with no detailed information on any of them, including price.  Why are so many models needed?  Not explained.  Not doubting the quality of the DACs.

Thanks!

I believe ARC is Audio Research their new model is a DAC 9. 

I havd found that wolfson dacs have a smooth/warm sound. I have never heard it but I notice the Rega you listed uses wolfson. 

@djones51 - Ah, OK, ARC as in Audio Research Corporation or Company.  Thanks!

Wolfson DACs...Maybe that's the "secret," the type of chip.  Thanks!  It makes sense that Rega would try to achieve an analog sound.

It's how they implement the chip other chips can have that warm sound . I have the AK4490 chip in my integrated amp and discovered I prefer it to the wolfson dac in  products I have used but the wolfson always sounded more laid back.