TRUE-BYPASS.... The perfect solution for those who are concerned about getting the true sound of the guitar_amp signal, and spice it with effects whenever you want. Also, the Tuner Out option enables you to tune in silence, without anoying other members of the band. Onother plus is the perfect online service you get, if you ever have a problem with the switcher. In all, the "5 Looper w/Tuner Out" from Loop Master is a great product, with a great price.