To take advantage of this offer visit: http://www.koss.com, browse the headphones and select your favorite, add your item to your cart, proceed to checkout, enter promo code SHOP25 and submit your order. Previous purchases are not eligible for this offer. Free shipping offer only applies to orders being shipped to United States addresses using the USPS Priority shipping option. Pro4S, SP540, SP330, BT540i, BTS1, ESP950, and Striva Products are not eligible for this promotion. Limit 3 Porta Pro and 3 Porta Pro KTC per order. Discount and Free Shipping is added at checkout when the following code is entered at time of checkout: SHOP25. Valid through 08/27/15 11:59 PM CST in the United States and Canada.
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