Massdrop: Sony Z7, BeyerD DT990-600 Premium, Sieveking

The action continues at members-only Massdrop with three items added. As of the time of writing they are not fully unlocked but they have seven days to do so (from blog-posting date). They are:

* Sony MDR-Z7 over-ears as low as $510 shipped
* Beyerdynamic DT990 Premium (600 ohm) as low as $228 shipped
* Sieveking Omega Headphone Stand as low as $140 shipped