When the theremin delay signal that had been allocated to outputs #1/2ch is changed to outputs #3/4ch, the separation and intelligibility of the sound image are dramatically improved, and the Transition becomes more effective.

Similarly, the Looper’s Delay signal, which had been allocated to #3/4ch, is distributed to #1/2ch.

The results are generally good, but the tonal atmosphere changes considerably, so a simple L/Rmix can be selected as an option.

Ultimately, it is a matter of taste, but I believe that signal separation should be prioritized in 4-channel operation.

When I switched to the stereo operation mode, the impression was rather easily integrated, so this mode should probably be used in a limited environment.

On the other hand, the case using 4-channel operation, the sound image changes greatly depending on the placement of the loudspeakers, and it seems to be a bad idea to simply deploy them in the four corners.

Then …

Solved the problem that the connection destination of Delay, which was supposed to be assigned to 3/4 channels, was changed to the Main output when Looper was started.

Thanks to the separate delay lines, the sounds is nicely separated.