Coming full circle back to your original question. If you don’t feel you can simply take the manufactures word for it, and you don’t have the schematic, it occurs to me that there is a way to quasi-verify that output is impedance balanced. As has already been suggested up thread, you could jumper off the XLR pins to check if a an audio signal is present on each of pins 2 and 3 with respect to signal-ground. If an audio signal is present on each pin, that means the output signal is differentially driven, which also means that it is almost certainly is impedance balanced as well. I can’t think of any reason why a designer would implement differential signal drive on an XLR connector, without also implementing a balanced output impedance to accompany it.
The uncertain bit would come about should there be no audio signal on one of XLR pins 2 or 3. That could be because the output is wrongly impedance unbalanced, meaning (is near zero ohms impedance to ground for the pin with no audio signal), OR it could be because it DOES feature a true balanced impedance output, but with the uncommon application of a single-ended signal drive. As in Jensen AN003, fig. 2.4
Nelson had smoked a bunch of electronics before we had LEDs and before Bruno was born.
So, if Nelson says blue LEDs create more 2nd harmonic, then I can live with that.
I think the classic Conrad Johnsons had red and the Audio Research designs had white... but then, when you got 440V floating around in the Vcc, what's a puny LED gonna do, eh?
Come to think about it... I got to see what color LED is in the Ghent case kit I got for the NCore eval board.
Update, ROTFLOL.... it looks blue! Go Nelson!
https://www.ghentaudio.com/kit/b180a-s1.html
some sort of headphones (a cheap one)via an adapter (if available) can be used?
TonyEE, you know that Einstein also said the red ones have least noise.
Maybe it is wise not to believe anything a person says but let the numbers speak for themselves.
Maybe it is wise not to believe anything a person says but let the numbers speak for themselves.
Yes, but be careful not to place them directly over your ears, as the sound may be very loud. Also, the load of phones may be too low for undistorted sound, but that’s alright because you aren’t judging it’s quality.
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