Is this DAC available for order? Any feedback or reviews of this DAC? I read somewhere that it will be available at the end of June
It will appear in the next days i think, here´s a nice vid showing it´s insides http://uk.cinenow.com/videos/2377-arcam-r-dac-resolves-the-quality-issues-of-pc-music-sound-and-vision-the-bristol-show-2010
Here a dealer claims to have it in stock on the 30th this month
Looks like the rDAC will be out soon if it's not already (at least in the UK, no idea about the USA) because it's now on Arcam's Web site: http://www.arcam.co.uk/
And here's their product page: http://www.arcam.co.uk/products,solo,DACs,rDac.htm
I really like its compactness and the styling - nice & sleek, just as I was expecting from Arcam. They mention the asynchronous USB technology comes from dCS, I'm not sure if that's a good or bad thing though.
Me too.. I hope that they sound better than the DAC Magic. Otherwise they arent worth the 70 GBP premium over the DAC Magic. I am holding my DAC purchase waiting for some good reviews.
Switching PSUs aren't usually as nice a linear ones but some designs are fine with them... We will see. I'm excited. The wireless version is kind of cute too, I'd pay a small premium for it, US$50-100, but not a primary use for me.
Found the following explanation in the net.
Warning: Spoiler! (Click to show)
Unregulated power supplies find very limited use today, since the output dc voltage is proportional to the input ac voltage. Output voltage fluctuates in step with input variations as well as changes in load impedance. Also, ripple voltage can run as high as 10% of the output dc voltage. Even with filter networks on the output, the remaining ripple and load regulation may be insufficient for most modern electronic circuits. But some components -- relays, solenoids, and indicating lamps, for example -- do not usually require a precision and filtered voltage. Thus, an unregulated power supply may be desirable for these circuits because unregulated supplies are simple, reliable, and inexpensive. Additionally, unregulated power supplies are typically more efficient and dissipate less heat than regulated power supplies with the same output voltage and current.
Regulated power supplies are the type most widely used. Two fundamental designs are the linear series-regulated and the switching power supply. Although switching power supplies are considered by many to be the new wave of technology, they have been around for many years. But, because of recent improvements in semiconductor components, capacitors, and transformers, they can be made more reliable, simpler, and less costly than just a few years ago. They are well suited for applications requiring small size, high efficiency, and moderately good regulation. On the down side, however, switching power supplies generate voltage spikes and noise in their outputs and can radiate EMI/RFI because of switching transients. These unwanted signals can seriously interfere with legitimate signals and completely mask others. Thus, carefully designed power supplies should include effective shielding, bypassing, and filtering to prevent propagating noise into sensitive circuits.