I agree but the reason I'm asking is because I'm thinking in modifying some of my gear with the option to select between TX/IC output and practically speaking it'll be a lot easier to switch the signal when it's still unbalanced (primaries). So, is it OK to have the ferrite beads on pins 2and3 regardless on whether there's an IC or a TX before? Hope I make some sence...
When I designed the A-Designs Mix Factory, we did the same thing, it was well worth doing, as one was clean and one was "dirty". I did play with the IC outputs with 2) 10 ohm resistors, so the IC out had the same loaded level loss as the their transformer, so when you switched, it was the same level. For this unit, 10R was right. Just play with the values and have a few different loads, 1K, 5K, 20K etc, to find the value.
As far as the ferrite beads, like John said, don't waste your time, it's only for CE certification when you are manufacturing, to insure that if you have any clocks inside the unit, they don't escape. A ferrite bead or small choke won't effect any tone at all, unless it's huge, and you don't need that.
When switching the outputs, use a double pole switch or relay, and I always hook 100K-200K between them so they are always at the same DC potential in case their is an offset or the next device has any offset, it just prevents a POP or Click. The IC out would have the output caps against the op-amp, and a value of 220uf to 470uf is fine depending on what the next stage load it, then the series resistors. Always put 100K to ground on the outside of the cap to ground (before the series Rs).