Best affordable Linear Power Stage

Folks, can you provide some help please, to understand the "wattage" of a switching power supply and equivalent linear power supply?

I use the HDPlex 400W HiFi DC-ATX in my fanless PC build, which runs the HQ Player. Currently I use a Dell 330W power adapter that powers this PC. I understand that this outputs 19Volts. But I also see from other sources that this also outputs 10 Amps of power?

I see that the linear power supply specs mentioned above do have 12-19Volts output. But what about the Amperes? Will that matter when I try to replace the Dell switch mode power supply with a linear power supply?

knownothing: I am certainly no expert but google is your friend here. The argument is that R-Core, especially if isolated in a different chassis as it will be with an outboard linear power supply, will be quieter and perform better. The disadvantage, when compared with most torroids is size and weight, which again, is less problematic with an outboard as opposed to a built-in power supply. 

As with all things audio, there is rarely universal agreement but as you say it is a pretty insignificant experiment to try out the Sengterbelle I linked to. It was a fair bit better than a slightly less expensive Talema torroidal based power supply that I also have here on my DAC and astonishingly better on my Wiim Pro+ as a streamer only, which certainly flies in the face of logic with the "bits are bits" crowd. 

Here's a couple of links to discussions on other forums and I'm sure there are others. In any event to say I've been happy with the Sengterbelle's would be an understatement. If it doesn't work out for you, you're out $100. ;)

https://www.stereonet.com/forums/topic/55835-why-a-torroidal-instead-of-an-r-core-transformer-in-digital/

https://www.diyaudio.com/community/threads/toroid-and-r-core.228096/

John Curl also, for example, seems to have a preference for R-Core, so I figure that's probably not a bad thing?

Thanks @hdm 

So received my LHY LPS for the uDDC. As advertised it’s like putting the uDDC on steroids, great product and result. I ordered this from Alvin at Vinshine Audio, this one is specifically noted on the site to be the preferred LPS for the LAIV uDDC unit.

Very pleased and only took about 5 days to get here. For anyone with a LAIV uDDC I would highly recommend giving it a try.

@toneranger58 from Alvin at Vinshine, the DDC version is 5V 2A vs 3A for the regular 5V LPS. Similarly 15V 2A for the micro DAC.