Here's a breakdown:
* "tz" is pronounced like a "ts" sound, as in "cats"
* "a" is pronounced like the "a" in "father"
* "n" is pronounced as usual
* "t" is pronounced as usual
* "sa" is pronounced like the "sa" in "sad"
So, put it all together, and you get "t͡san.t͡sa".
Keep in mind that "tzantza" is a Shuar word, and the pronunciation can vary slightly depending on the speaker and region.