adding external pedal?

  • Profiler Reference Manual, page 103:


    Effect Loops (White)
    To connect external gear, the Profiler offers a hardware effects loop, represented by the DIRECT OUT/SEND and the RETURN INPUT on the back side of the amp. These are actually the same jacks that you use for profiling. You can apply the hardware effect loop in any of the Stomp Modules or in X or MOD in the Effects Section. As you might have guessed, you cannot use the hardware effects loop in more than one location of the signal flow at the same time. So if you try to engage the loop at more than one location within one Rig, the first loop in the signal flow will win.
    While Loop Mono works well in Stomps as well as Effects Section, you can establish a stereo return for your external effects by placing Loop Stereo in the X or MOD Modules of the Effects Section. In this case, the RETURN INPUT will work as the left input and the ALTERNATIVE INPUT as the right input.
    Please ensure that the “Mix” control of the Effects Loop is set to 100%, to avoid coloring the external with the blended dry signal. However, if you prefer to derive the dry signal straight from the Profiler, then use the “Mix” control to balance the external signal and the internal dry signal. To do so, you must check that the dry signal is not passing the external device. This is usually done by setting the mix control of the external device to maximum or by using a "kill dry" function to mute the dry signal in a global fashion.
    The Loop Distortion is made for connecting distortion pedals to the Profiler, and is only in mono. The feature unique to this loop, is that any volume boost of a preceding effect will be applied to the DIRECT OUT/SEND jack, thus driving the external distortion pedal. This is actually what you would expect, anyway. The regular Loop Mono and Loop Stereo do this differently: here, the volume boost of a preceding effect will be applied after the RETURN of the loop. The send level will be unaffected, so the connected effect will not be overdriven. The regular Loop Mono and Loop Stereo are suitable for all non-distorting effects.
     If you want to keep your external effect inserted for all Rigs, just lock the effects loop by pressing LOCK.


    There are more details and pictures in the manual :)