Quote: Originally Posted by ezzieyguywuf /img/forum/go_quote.gif Sweet, it turned out a lot cheaper at the site you linked than at thetubestore.com My total is now under $50!!!! Including tubes! Alls I got left is to think about a chassis. Woot. I think I'll use a breadboard as my common ground, instead of a copper plate. does that defeat the purpose or will it suffice? The copper plate would be better, but I guess it depends on your choice of case. If the case you end up using has plenty of metal in it to form a good ground sink, then a breadboard will be fine. This isn't a statement of precise knowledge, but I just have a feeling after building a few of the PCB versions that the SSMH needs a hefty ground to be happy. Those that have hum/noise issues in P2P versions seem to go light on the grounding material. It doesn't matter how many wires you run to ground - if the ground you're running to is insubstantial. A couple of the early PCB protos seemed to have had this issue, especially if they were left uncased. Just as example, in the MAX/MiniMAX, a 2 oz. ground plane was worth an additional 5-10 uVAC in ripple reduction (in the PS) over a PCB with a 1 oz. ground plane - with everything else equal. I think the SSMH is more sensitive to good grounding than that, even.