Have done a bit of a search but couldn't find anyone selling any PCBs for a passive summing box similar to the Folcrom or DAV units. I recently bought an extra 8 DA outs to give 16 out and want to see if I get a noticeable improvement in sound by mixing this way and thought a DIY approach would be good. (Make up gain through a reasonable stereo preamp). Am not inclined to wire up DB25s but happy to solder up an angled connector to a PCB should such a beast exist!
Any help would be great.