If you’re selling a cure to a nonexistent problem and claiming unlikely sonic differences with no evidentiary support, the last word I would use is “honest.”
If you’re selling a cure to a nonexistent problem and claiming unlikely sonic differences with no evidentiary support, the last word I would use is “honest.”
I have one of those, but I noticed that I get much better precision with a manual spike like the one in the picture. It has a very sharp tip.
You’re making the common error of conflating “subjective” with “totally uncontrolled.” The actual problem is irrationality, and In my mind, exploiting that is not something I could do in good conscience.Technically, you are right, when you are saying that there is no problem to be resolved by interchanging the OPAMPs; I’ve read about it. I am not debating that.
However, there is a problem that needs a solution. Some people are selecting audio equipment on subjective grounds, and they are very aware of that; many of them are even considering us, people that are paying attention to the concrete measurements, as geeks. I would even say that these subjective-criteria buyers are in the majority, and they are creating this special market demand/segment. One company or another would step to the occasion.
If you would have to sell amps to this market segment, how would you phrase the advertisement material on their behalf, so it would not be distasteful?
Tough to do unless you can get the level matching within .1db.Try doing it level-matched and without peeking. I'll bet the differences "magically" go away.
They just require a DXF file showing what you want. Details in https://modushop.biz/site/index.php?route=product/product&path=263&product_id=490Any reason they couldn't also provide those two holes for the screw points that would make the back-panel electrical connection?
Smh. There’s nothing wrong with what you linked to. If you don’t think there is a difference in sound between the opamps that’s your opinion, but offering them does not make someone a snake oil salesman. I read what you linked as being honest and straightforward nothing you link to is overhyped, or oversold.They're not at the level of someone like Ted Denney, but nonetheless, their site makes a lot of questionable sonic claims. This, for example. At least the pricing isn't stupidly high. But it's "solving" a "problem" which doesn't seem to exist.
Smh. If you don’t think there is a difference in sound between the opamps that’s your opinion
So the linked text is dishonest because the person behind the amplifiers knows that the opamps sound the same when properly implemented! The text is merely playing on the myth and fear of opamp rolling, it is not providing a properly engineered and argued solution to the problem. Worse, it is providing validity for the false idea that opamps sound different, misleading people.Smh. There’s nothing wrong with what you linked to.
« Unlike other buffers, including the Purifi EVAL1 and the Hypex NC500 Evaluation Board, this Input Buffer will provide a differential output for the Class D amplifier »
NOOOO it’s a mistake
With a differential input the EVAL1 provide a differential output to 1ET400
See the diagram below
View attachment 64372
Yes it don’t create differential output with a single ended (rca)...
Interesting, did they mention anything about the connection system to the power supply?Had an email exchange with Purifi, and they'll be releasing a mono input buffer next month with XLR/Speakon, XLR/Banana or no pre-installed sockets. No word yet on pricing.
Not sure yet if I should get the Neurochrome or go all Purifi.
No, but they did share this CAD drawing:Interesting, did they mention anything about the connection system to the power supply?
The DAC board is an idea floating in the air since a while now. The NC500 datasheet even provides schematics on how to interface a voltage out DAC to the NC500.What I like the most about the neurochrome offering is the 0dB buffered option.
What I would really like to see is an integrated DAC chip, with a 0dBFS output level matching sensitivity, and of course noise and distortion figures matching those of the amp...
Stereo buffer, USB and spdif inputs, ...
That would solve so many problems at once!
Interesting! I wonder why they would offer this. It is not required for amp module evaluation. Or is it? Does an (even) lower noise Vreg provide any amp output improvements? Otherwise, it is transitioning into a space they said they would not occupy - end user solutions. Anyway, I like it for odd-channel DIY builds (1, 3, 5). Price???No, but they did share this CAD drawing:
View attachment 64404
They otherwise mentioned it uses the same buffer/gain stage, but a improved low noise regulator.