BTN - Ballantyne Strong Inc 2021 Q2 - Results - Earnings Call Presentation August, 10 2021 07:23 PM Ballantyne Strong Inc. The following slide deck was published by Ballantyne Strong, Inc in conjunction with their 2021 Q2 earnings call. For further details see: Ballantyne Strong, Inc 2021 Q2 - Results - Earnings Call Presentation