How many promotion codes can I redeem at once? Level 1 Support January 21, 2020 22:03 You are only able to apply one promotional code per purchase. Related articles How long will my order take to ship? How do I redeem a promotional code? Why was I charged twice? My BlackPods arrived defective, can I get a new pair? I already placed my order, but I forgot to input my promotional code, can I still use it? Comments 0 comments Article is closed for comments.