1. You may have the problem on it shows not working when input the discount code, like here.

2. That is mainly because you didn't choose the right shop, we have to choose the TZ Audio Distributions Shop.

    1) Search Condenser Microphone in Amazon.

    2) Find the Stellar X2 in Amazon.

    3) Press Other Sellers on Amazon.

    4) Find the TZ Audio Distributions shop.

    5) Enter Discount Code.

    6) Success.