Hey Folks,
I too have tried to get "reliable" audio out of the line out (stereo pairs) and had issues with it working and then not working, then sort of working on one channel, then not working. After wrangling out the usual suspects (cabling, routing, etc.) there still was some frustration and concern that in a gig situation it might not work as intended.
Inserting a mixer in the chain seems to help, and i did some comparisons between the headphone output and the line out jacks. Adjusting for the different drive impedances at the input fader of my mixer, I found the two paths to be pretty close to identical when the ambient / spatial effect is off.
I'll let you know after some cycles if the outputs are behaving with my Mackie mixer after some setups and tear downs.
Regarding the the output speaker control mentioned in the thread the dummy jack seems to do the trick, but I may add a external switch to the unit to control this to avoid breaking the jack by accidentally bumping into the dummy jack, or i may as a backup fashion a right angle plug and strain relief so I have a second path to the mixer.
I was hoping to directly drive my amp, but the output drive of the line outs (and certainly the headphone out) is not enough to push my amp to its full range (when some oomph is needed).
