They're certainly a family of headphones...but like any family, there's lots of differences. Small differences in most of the baffle plates and rear damping...could be lots of stuff going on around the driver that can't be seen.
That aphorism has few fans among people shopping for cancer drugs, contact lenses, GPS receivers, and laptop computers, all of which seem to get better with each passing year. Hell, even I know that.
It earns a more positive reply from anyone who's shopping for an oriental rug, or a fly rod, or a tweed jacket, or a musical instrumentpeople who will tell you that their fond response to the market for vintage examples of such goods is motivated by two things: older products were better made than their newer counterparts (better designs, better materials, better manufacturing techniques), and some, if not all, of those products, over time, actually improve with use.
I'm going to spend the week parsing the differences between a number of the variants of the Foster 443742 (seen on page H-4 of this .pdf). This survey will include: Fostex TH900, TH900mk2, and TH610; Massdrop THX00; Denon ADH-D5000; and the E-Mu Teak stock, and with optionally available Rosewood and Mahogany cups.
Wireless headphones are hot, hot, hot these days. I'm going to make a concerted effort to cover quite a few in coming months. Here's a start...
