If anyone here has the Quicksilver Line Stage Preamp AND the HP amp, how did you connect them? I asked Mike to make the tape outs into another set of outputs to run subs which works great, but it seem to me that I would either need to replace the QS with a line stage with headphone jacks or have to plug/unplug when I want to use it. Which I guess would also mean turning off/disconnecting the power amp as well.