Open-box Fostex HP-A4 DAC/amp for $240 after coupon

Coupon code CLEAROUT15 gets you 20% off select clearance items at BuyDIG until 12/31/17 at 11:59pm ET. One of those options is the open-box Fostex HP-A4 24-bit DAC/amp which drops from $299 to $240~ with free shipping. There is only one unit available of this per the listing there.