BuyDig offers the Beyerdynamic DT 1990 Over-Ear Open Headphones
bundled with the FiiO E10K Amplifier
and a FiiO L16 Audio Cable
for $599. At final checkout, that falls to $499
. With free shipping
, that's $188 under the lowest total price we could find for these items purchased separately elsewhere. These open headphones feature a 5Hz to 40kHz frequency response, 250 ohms impedance, 3.5mm jack, coiled and straight cables, and 1/4" adapter. The amplifier features a 20Hz to 20,000kHz frequency response.