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To all the audio guys out there.

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pope:
I have a QuantAsylum QA403 and although I like it quite a lot, I'm having hard time to measure the maximum level and headroom of pro audio DUTs (compressors, EQs, mic pres, etc...). The QA403 will output "only" around 20dBu which won't cut it for such measurments.

So, the idea is to use some sort of an amplifier between the QA403 and the DUT. It has to be balanced I/O with low THD and noisefloor. Bandwidth isn't too critical I suppose. Anything above 40kHz would do.

Has anyone run into a similar situation and if so, how did you resolved it?

KungFuJosh:
I want one of those, but don't have it yet. Have you tried their forum? https://forum.quantasylum.com/

pope:

--- Quote from: KungFuJosh on November 12, 2024, 10:25:26 pm ---I want one of those, but don't have it yet. Have you tried their forum? https://forum.quantasylum.com/

--- End quote ---

Not yet. I though I'd try my luck here first  :)

bson:
Input and output signal levels?  What is the input impedance of the DUT?  Unless it's too demanding this should be easy to whip up yourself with one or two fully differential opamps.

KungFuJosh:

--- Quote from: pope on November 12, 2024, 10:27:30 pm ---
--- Quote from: KungFuJosh on November 12, 2024, 10:25:26 pm ---I want one of those, but don't have it yet. Have you tried their forum? https://forum.quantasylum.com/

--- End quote ---

Not yet. I though I'd try my luck here first  :)

--- End quote ---

Sure, but here you'll get EE answers to an audio question that I'm sure has been asked there before. If you do get an answer from there, please share here. 😉

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