Chassis Ears Automotive Engine Noise Finder, 6 Channel Car Sound Detector Tester Tool Set, Electronic Stethoscope Diagnostic Kit with Headphones

For the price this works amazingly well. Used it to diagnose a noise coming from under my car.

Everything works fine, better than I expected.

This tool has a lot of capability - unfortunately mine came with 2 bad cables and 1 bad clamp/microphone.But moving around the cables and clamps, I was able to get 4 channels working properly and with only 4 channels, I've been able to diagnose several noises by comparing the height of the display lights on the various 4 channels which are connected to different parts of the engine.Because I have 2 dud cables and 1 dead microphone/clamp, I only can listen to 4 channels. I've used the headphones and selected the different channels to compare the noise level listening with the included earphones. I called Amazon and they said to return this item and then order another one, but it would be much simpler if I could just get the 2 bad cables and the bad clamp/microphone replaced.6 channels would be perfect. As a master certified ASE auto technician, I plan on making a video on how to use this noise finder to find noises on various vehicles. I have super glued 1/4" x 1/2" long bolts to temporarily glue these to clean areas on the chassis or the engine and then connect the clamp/microphones to these bolts. When done, I just use Super Glue disolver and take them back off. The Super Glue accelerator spray makes it quick and easy to install these "Noise access points" - the 1/4" bolts

Not very sensitive. I have a rattle in my car. I was trying to find you can clearly hear it, but this machine would not respond to it. No matter where I clip those clamps to.

Perfecto