ALLOSUN - EM480B Audio Impedance Tester Digital LCD Insulation Resistance Megohmmeter Meter Tester with Bag

It works as expected very eazy with speakers,, but I had a hard time measuring cables to verify that the cables are 75 ohms impedance as stated because those todon cables do not id the cable to identify if its a regular rca or coaxial.

No frills, it works, using for 70v speaker installations mostly, tested with several circuits already and it's accurate enough. No frills no extra features but takes accurate readings

Works well, but can't test individual speakers wired at 70v - 1w because impedance too high for this unit.

It may not have quite the same measurement range as more expensive devices but it is great value for money. Very happy with the purchase and it's already paid for itself in terms of resolving problems.

This impedance meter is very simple to use and is great. The case keeps it protected and I am using it to test circuits on a commercial fire alarm system. It gives you the calc to convert to watts in the instructions. Would definitely recommend

Was able to quickly diagnose a 70V outdoor distributed sound system.

I haven’t had a chance to use this much yet but so far so good! It does everything it says it will and construction is good also. Very nice that it comes with a case and I’m very happy with my purchase.

Will not work if I fully screw down the battery cover. Three out of four of the screws are fine, but as soon as I tighten the fourth, it shuts down. That tells me the screws are too long or not properly insulated from the internal electronics. If I didn't need it right away for a job, I would immediately return it. As it is, I'll probably send it back as soon as I'm done with it. I am beyond dismayed that in this day and age, manufacturing on a professional product can be so poor

This is an effective meter for the price. If you're an audio professional involved in high-impedance speaker installations, this will measure the total impedance of the speaker network at 1Khz. My only criticism is that it should do other test frequencies as well, e.g. 150Hz and 15Khz. Plan to use throw-away alkaline batteries to power this meter. Typical NiMH batteries are just a little bit too large to fit its battery compartment.

Llegó mucho antes de lo que marcaba la aplicación y en excelente estado y funciona como dice las especificaciones

Nous avions besoin d'un 2ieme tester de speaker 70volts Et celui-ci semble parfaitement répondre au besoin. La fiabilité est à valider mais après les premiers essais, tout semble parfait. L'etuit est très pratique avec le couvercle rigide et la courroie de transport.

me gustaria que tuviera mas rango de impedancia minimo 20000 ohms se me queda corto en algunas situaciones