How noisy is my line? Audio Prism Noise Sniffer

Thanks to posters about the meter. Yes, it's crude. It's probably enough for me to get a very general impression of my various lines. The idea that I need a much more elaborate meter is based on uses I have not contemplated and are likely irrelevant.

@thecarpathian 

I got rid of the Quicksilver Pre in favor of a DIY based around the DeHavilland Ultraverve III. 6SN7 tubes are preferable to my ear.

I like the Carbon7 better than the Salks, not least because of the Be tweeter in the Salks. The Carbons have a really gentle and musical (that word!) touch. I have noticed a couple video reviews on the Carbon 7 recently.

Terrific, thank you.

Buy a digital oscilloscope for under $400 and learn how to use it. Way more informative and useful, way less woojum.

What the heck is woojum??

Do you mean boojum?

I use the Enteq as a general sniffer.  I then plug it into a conditioner to see how quiet it is relative to the noise.  In my observations the Puritan 156 is quieter than the Furman reference 15i.