Bobalou said:
the DMP-3
the Grace 101
Sytek
Rane ms1b
RNP
the new SP 828
any others????
The Grace 101, the DMP3, and the Rane MS-1B all use the INA-163. Since Burr-brown was purchased by TI, you could also call it the TI INA-163.
The INA-163 is what they call an Instrument Amp. It's sort of an all-inclusive deal; sort of like a "pre-in-a-chip" kind of thing. Most all of the budget mic pres -- and even some of the higher end stuff -- is centered around an Instrument Amp.
There are a total of 3 different Instrument amps in existance. One of them is also by TI -- it is called the INA-217. The other is by Analog Devices; the SSM2019. Both the INA-217 and the SSM 2019 are newer versions (basically pin-compatible drop-in replacements) of the discontinued SSM-2017. Which is a good thing, apparently (a lot of designers I've talked to didn't like the 2017 at all). So the INA217 and the ssm2019 are basically the same thing.
The RNP, to my knowlege, does not use an Instrument Amp in it's design. It does use a series of transistors and Integrated Circuits, though, from what I gather. Same thing with the Sytek. This is where the confusion comes in to play; although the Sytek uses Burr-brown I.C.'s in it's design (on two of it's channels), they're a completely different product used in a completely different manner. The Sytek and RNP are more complex and more "thought out" designs in that regard. They're not just based around some Instrument Amp. The opamps that the Sytek uses are called JFETs. Now JFETs are kinda' cool in that they do have a lot of characteristics normally associated with analog discreet circuits. I.E. -- they will distort in moreless pleasing ways when driven.
I don't have all of the info. about the new
SP 828. I do remember Alan mentioning something about using the INA-217 in all of the new Joemeek products . . . which makes sense considering that it replaces the old SSM-2017 that's in all the previous Joemeek models. And I also know that he was originally considering making the 828 a Joemeek product. I also noticed that he says it uses the latest rev. of the Burr-brown opamps.
This would lead one to conclude that the 828 utilizes the INA-217 chip. The only other logical possibility would be the INA-163 -- which would likely be a good thing, by the way. I highly doubt that anything with a more complex design would be able to fit in a space that small and sell for that kind of price per channel.
Just so you know . . . a lot of the designers I talk to don't seem to like the INA-217 all that well. I hear a lot of reports about the high end sounding funny. Keep in mind these are ulta gearsluts, so they're going to be a lot pickier about this kind of thing than you or I.

They do seem to like the INA-163, though, and I have to agree. Most of the 163-based pres out there just sound excellent for the money.
Knowing Alan, though, he probably used the 217 in an attempt to cut corners or something. He ain't the sharpest tool in the shed, you know.

He he. I shouldn't say that. Maybe he's just thinking ahead. You know, the good news is that a company called
THAT will be releasing a
new instrument amp called the 1510 in the near future. They've supposedly been perfecting this thing for the last 5 years or so, and it's going to blow the doors off anything else out there. It will be totally interchangeable and pin-compatible with all the 217's.