Sennheiser HD 630VB headphones measurements can be found by clicking this link.
September 2016
There can be no doubt that Sennheiser is one of, if not the, best-known headphone brands. The company offers models for every conceivable application, ranging in price from under $20 to the flagship HD 800S ($1699.95 USD). Sennheiser is also one of the few brands that is both familiar to the mass market and respected by audio engineers and audiophiles the world over.


I hadn’t heard much about Acoustic Research in a long time, though the name was very familiar. When I was in college, every other student who was on a budget but appreciated great sound had Acoustic Research AR-3 bookshelf speakers. These used an acoustic-suspension design that produced amazing amounts of bass from a small box. Then AR produced an affordable ($78!), high-quality turntable, the AR-1 -- a belt-driven design that greatly reduced acoustic feedback. Since then, AR speakers and turntables have only appreciated in value, as collectors continue to seek them out.
