This is a great pedal for producing guitar harmonies.The pedal foot-switch also acts as an expression pedal when press further.It also has a buffered bypass inside the backside of the pedal (open the pedal back cover and there will be a small DIP switch near the power input jack).However I have notice that when you use this inbuilt buffered bypass (DIP switch ON) ,there is tone coloration .Apart from that this is a high quality,sturdily built and the perfect pedal for creating your guitar harmonies.
I've never had a TC product, but have always believed they had good quality. This is an Insane pedal. great pitch shifting technology, super easy to use. I could bend the harmony voices up or down and with a great ability to do it either subtle or with extreme effects