Bit old i know, the filter thing seems to be the same problem as the current CL, how much diff does unbalance input really make (URX/ERX are both unbalanced outputs), really only make a diff over longer cable? Eliminator is pretty easy. Been playing with a couple of my old tx today, and they have stereo as an option, so i set it to that, set tone, and it shows 2 lines on the tx screen, on the URX it also shows 2 lines, when i switch off L, one channel drops out and vice versa. Are my trx900la and trxla2.6 stereo and just not advertised as such? I dont have (but will make) a stereo splitter to try this out properly.