Significantly reduce oscilloscope noise with a low-cost low-noise differential probe.

At low frequencies, such as audio signals, oscilloscope noise is usually 100x or more higher than what is possible with a low-noise differential amplified probe. These low-noise probes are usually very expensive (not to be confused with high-voltage differential probes, which are inexpensive but quite noisy). Now AlphaLab Inc. manufactures a very low noise differential amplifier/probe that is much less expensive-- the LNA 10. It's used for signals 1 MHz and below. Gains are 10/100/1000x, with a tunable low-pass filter 1Hz-1MHz.
www.alphalabinc.com/product/l...

[@KG4JYS]

Wow, that's an awesome tool at this price. It's on my short list!

[@yjweaver5108]

Nice setup, good demonstration. Thanks

[@JohnUsp]

Awesome, congrats.

[@robertcameronjones]

impressive

[@HerraHazar]

Will this help me see the actual noise in a circuit, that is reducing the probe noise?

[@OctavMandru]

Or just use two probes and math function to sum ch1 and inverse of ch2 for the poor man. But I'll admit that is one good unit to have around

[@maxjakobsen5526]

The cable you use for the scope is lousy. Use a better quality cable and the noise will be as weak as your wonderbox.