I think that is effectively the same solution we are describing. It's connecting the RCA ground of the Icon to the XLR ground (and the XLR ground is connected to the amp's ground once plugged into the amp). At least that's how I interpret it. That approach is cleaner IMO, but requires you to open up an XLR cable, which is a little bit more effort. It would be awesome if Bluesound supplied this modified XLR cable (doubt that will ever happen though).