A few new PCB's added to the store

M/S PCB:
I would think they are gonna be similar since they both use the THAT Chips. I was originally thinking of trying to do one with discrete op amps but the precision of the THAT chips makes the most sense in most mastering gear applications. So since the bulk of the heavy lifting is done with the THAT chips they will function and will probably sound similar. I do see that mine has a different concept for psu decoupling. I find that proper (IMHO) decoupling above and beyond what the datasheets show makes an audible differences.

So the main differences that I see are:
1. The handling of the power through out the design
2. Extra bypass/switching features that I wanted/needed
3. This PCB will line up to my stereo back panels via PCB mount XLR's.
4. I also made it possible to use SMT IC (with PCB heatsink for the 4898 if one was inclined to try it) in place of the 5532. So, there are a few more options available to guys to try out.

Looks like my mouser parts will show up today. So hopefully I can build a few of these up for my own personal stuff and finally clear a little room on my bench!

DC Filtering PCB:
I have done testing at a friends (more test equipment and way more knowledge) place on the switching supplies and filtering. Wow, what a difference a proper design and layout makes! I need to take my Radial Workhorse in and measure the noise of the PSU on the card edges. If it looks as bad as I think it will, I will be building up one of the DC Filtering PCB's to put in use with that as well. The PSU's that I have coming are the same ones Radial and API are using.

I know some designs like the Purple rack that use a switching supply also implement a good amount of filtering. I am not sure if API or Radial do that?