HeadRoom takes 15% off sitewide via coupon code "headfi15". Plus, this discount stacks with sale items. Even better, orders over $49 qualify for free shipping. (Otherwise, shipping starts around $6.) That's a very strong discount for audiophile-quality equipment from such brands as Etymotic Research, Westone, and Beyerdynamic. Some exclusions apply. A couple of best bets, with prices after coupon:

• AudioQuest DragonFly USB DAC/Amp for $127.49 (low by $21)
• Fostex TH-600 Premium Closed-Back Headphones for $509.99 (pictured, low by $90)