For years, we have been frustrated to hear the signal deterioration when playing through a chain of effects. Because of the narrow dynamic range and multiple filtering, these effects greatly disturbed the directness and trueness of the guitar signal. Pro-audio mixers standardized ''Aux send/return'' function to help solve this problem. This preserved the integrity of the guitars signal and dynamics by feeding the effect with the signal separate from the main signal. The X-Blender incorporates pro-audio engineering technology to solve the sonic imperfection some effects produce and was designed to be completely transparent. Youll be amazed by the clarity of the sound! The X-Blender is a unique tool for the modern guitar / bass player. Its a switch-able series-parallel loop unit. A parallel effects loop allows you to mix or blend the effects with a dry signal (unaffected signal), creating a far more complex tone from your guitar.