Beyerdynamic DT 880 PREMIUM (600 ohm) + iFi Micro iDSD Black Label Headphone amp for $499 after coupon

Running until January 5 (2018) or earlier if sold out, you can get this bundle for $499 with free shipping from BuyDig: it is a Beyerdynamic + iFi combo. Use coupon code LISTENCLEAR to drop the price from $728 to $499. For that, you get:

+ Beyerdynamic DT 880 PREMIUM semi-open over-ear Headphones (600 Ohms)
+ iFi Audio Micro iDSD Black Label Headphone Amp