Jeff Rowland's Continumm

Hi Dave, I just read yesterday that -- according to an official personnel training document on the 2008 Bejin Olympics site, the politically correct term is now 'optically disabled'. Suchly, next Fall in Denver, I'll be delighted to participate to any optically disabled test. test

I'm finding Colorado, by and large, a little more politically correct than Texas, as you might imagine. (If we could throw out the Republic of Boulder we would swing way back toward "normal"). Anyway, that 'optically disabled' handle is a new one on me. As I consider it, there may have been a time or two in the past when I might have temporarily qualified. That somehow doesn't seem right, since I still don't even have glasses at age 60.

It's interesting how society struggles to name disabilities. For instance, "blind" seems like an absolute to me, but then they came up with "legally blind" to describe something less than complete. Now we have this term "optically disabled" attacking from the other end of the spectrum, covering everything from being a little "foggy" in the morning to the absolute, which I suppose we're not allowed to call "blind". Now we'll need a whole set of sub-modifiers to "classify" everyone within the OD category.

Sorry, way OT. Let the thread continue-um. (Pun intended, duh).

Dave

Spoke to JRDG today. From my conversation notes. . . The chips in the preamplification boards for Capri and Continuum, and the upscale boards for the upcoming Criterion, are OPA1632 ADSL differential in/differential out line drivers from Burr Brown TI. They have a 180mhz bandwidth, as such, strictly speaking, they are not phono modules. They are defined as hi performance fully differential opamps, but they are not opamps according to typical definition of opamps.
Noise floor is rated in nanovolts per hertz square root.
The devices are more typically used for driving high speed DAC circuits.
Bandwidth is further measured at 40mhz at 0.1db flatness.
distortion output is at 2k load is 0.000022%.
The chips are indeed very small 1/10th of an inch square. Internal topology of Capri is confirmed to be minimalistic. OPA1632 tiny geometry contribute to maintaining extremely short signal path crucial to audio performance. . . as we all know. One more desirable quality of OPA1632 is to have almost unmeasurable energy storage, which yields faster/deeper signal rising/decay, with consequential more transparent / 'blacker' background. G.

I listened to a couple digital amps,far from pleasant sounds

I disagree - based on my experience. Some suck, some rock. Which suck... to my ear, can be heaven to yours. Good design is everything....IMHO.