If that's not enough Daniel has a pretty comprehensive datasheet for the predecessor of the OP2-BP.
http://www.weiss.ch/files/downloads/op1-bp/OP1-BP-Datasheet-R1.pdf
And the OP2 has been improved further. In Daniel's words:
The improvements of the OP2-BP over the OP1-BP are:
- Emitter follower to drive bootstrapped cascode of input differential pair omitted; instead current source with emitter-referenced used.
- Trim range of DC offset adjustment reduced; drift improved by use of precision resistors in the active load.
- Improved bias line (frontend, output stage).
- Use of 68 pF capacitors instead of 47 pF for emitter follower feed-forward.
- Improved thermal coupling of output stage transistors by use of a common heatsink for all four emitter follower transistors.
- Use of SMD parts for the power transistors.
- RLC decoupling for frontend to improve PSRR.
- Differential decoupling capacitor for output stage to reduce harmonic distortion content in supply current.
If both listening test and raw data won't do it for you I guess you're SOL. Better off taking up a different hobby such as dog grooming or something 🙂
Ask Daniel. I'm sure he didn't just do it to impress guys on Diyaudio with the cool description.
I assume that by "raw data" you mean the data sheet with the list of technical improvements? Or do you actually have measurement data available?
Maybe if I was 2000 years old I'd have the cumulative knowledge of everyone working on our projects. But until then I'm just a dummy 🙂
Hey the snake oil suddenly disappeared from the walls....
By the way I love my dog....
I'm not sure. Is it possible here? I've mentioned a new Ncore based amp only to be met with the usual harsh criticism. Could it be possible that the tone that's set when anything interesting is mentioned in this thread, is the reason the contributions have slimmed down to nothing?
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Yes healthy much like drinking apple cider vinegar twice a day. It will appeal to very few.
Indeed. Most people prefer not to question what they are told. Unfortunately we see the results - in things such as politics.
The point is how interesting it is.
By mere coming up with another high tech discrete op amp, and so called super power supplies (by the way almost 1 mV ripple is nothing special...) I am not yet convinced.
I understand that there is some competition going on on how to "improve" NC500 based amplifiers by tossing around with input stages which has to be discrete 🙄 but it remains to be seen if it all leads to a better sounding amplifier. It's a very commercial affair.
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