I must admit, i bought this product with some reservations in mind regarding how authentic etc it might sound. There is another similar product available in a blue pedal, which also sounds good, however after comparing the two, i think the Boss pedal just had the edge of the other one. I ordered from Thomann, and it arrived a few days later. You can't really beat the service you guys offer. It arrived just in time for my gig. In use, the harmony effect is great, if you key in the correct harmony for the song. Luckily you can store 3 of your favourite settings, which we managed to use on a few different songs. I think the more you work with the pedal, and go through the best settings for the song, the better results you will get. So basically it sounds good out of the box, but even better if you dedicate some time to try all the settings on your songs, and pick what sounds the best. Great speedy service again from Thomann, thanks guys.