TC-Helicon Harmony Singer 2

This is a good pedal but its let down by poor build quality.
The jack inputs are plastic and will not last in my opinion.
Otherwise the unit seems sound but apart from the blue upper casing its mostly plastic and may not stand the test of constant gigging.

Loved this pedal, added so much to my performance and overall vocal quality. Only bought it back in february, but the past 2 gigs a MAJOR problem occurred. Without any sort of warning it randomly created a HUGE explosion of buzzing / feedback that nearly blew the speaker and deafened the audience, made me look so bad. It stopped once I restarted the sound systems. Found similar complaints online, had to remove the pedal to finish the gig. I’m going to see about replacing it and pray it doesn’t happen again because when it worked it was a must-have for my set.

If you use a Cannon-Jack cable or a Cannon-Cannon with a Cannon-jack adaptor on the mix/amp side, you will get a lot of noise (electric BUZZ). Microphones usually work with that kind of cable/adaptor, but this Effect DOES NOT. I have an old mixer with only Jack-type inputs, and I get a big buzz which disappears only... using a different mixer. TC Helicon should write it big and clear on the effect box, which contains no instruction. An instruction leaflet can be downloaded, but still DOES NOT contain any warning about Cannon and Jack inputs.

When it works its brilliant, but high frequencies confuse it, if you whistle or input notes or unusual tones(laughter etc) into it, it breaks up adding a high digital crackle, have had to turn it off & on again many times & the tone of your vocal changes each time!