Monoprice Desktop Headphone Amp for $70 with coupon

Monoprice has a new limited time coupon code, AF10 gets you $10 off an order of $50+ good until the end of day on Monday 7/20/15. With the coupon, you can get the Monoprice 11567 Desktop Headphone Amp for $70. In parallel, for the same time period, they will have a promotion that gets you free shipping with orders over $50.