Thanks will, that makes sense.  From what I see in the modded circuit diagram at the start of this thread, it seems like line out volume would follow speaker volume.  If I wanted to silence the speaker when using line out would I just need to add an spdt to switch between the speaker and a 4 ohm power resistor?

Hoping JoeCool85 is still around for me to necro this thread.  Would you be able to elaborate on the difference (if any) between the line out and the headphone out?  I'm having weird issues with using a K30RX to add reverb and pass the signal along to a mixer and am wondering if maybe this could be a better option than using the ph out.

Thanks!
Steve