Hi Daniel
there have been various discussions on that in this forum, you might want to search for it.
You can find the essentials here:
http://www.looproom.com/looperchart.php
If you want to midi sync, time shift etc., the Repeater might be a better choice. The good thing about the RC-50 is that you have everything in a nice pedal unit with 3 stereo loops - and you can get it in a shop. ;-)
I guess it depends on what you need.
Buzap
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