Gonna close my group buy up next weekend. If anyone wants a GRLV and GRLV split set here's the link https://docs.google.com/spreadsheets/d/1Z1L3MQuuY4ZTUyPQb1qBmVJp8MtC7qEzBUui3z5dFrQ/edit?usp=sharing
Yeah, it was awesome. The amp's always had some hum since I built it in 2008 but figured that's the way it was gonna be. Now, if I can find a cheap source for grain oriented steel.
The price is up for all but the input switch, split GRLV set, and the Dynalo Mini with TKD pot. I'll get the mini quoted, just waiting to see if the numbers increase on the switch and the GRLV split set.
I got rid of the hum... Yay!!! Two layers of a coiled steel band around the diameter of the transformer did the trick. The best part was that Avel Lindberg sent it to me for free.
I got the boards in the mail. I'm sure I can clean up the implementation. I also noted that 2x 100R gate stoppers between Gnd and JFET gates were added. They're surface mount and there were pads on the original PCB. These aren't shown in the schematic that was posted from Xen. It appears that these were added to help eliminate distortion.
I think closing the group buy on March 3rd will work unless anyone objects. I'll confirm all the gerbers and get preliminary board prices in the next week or so.
So the PSU is not performing well then right? I'll be swapping out the original dynahi PSU for a GRLV in a week or so. I could send you that one. I'm curious as to how it would measure. Feel free to keep it.