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Reviews (9)
Apr 05, 2018
Great portable product and very useful!
This is a great portable tool to identify most components, and it's quite accurate.
I've used mine to test and identify transistors, FETs, diodes, capacitors and resistors.
Great for example to check for defect transistors (where it is not totally dead), identify component pins, finding matching capacity capacitors for speaker crossovers and many other things.
The accuracy of resistors are very good, but not ideal for resistors of more then 1M ohm.
Transistors will easily be identified (or confirmed dead), and HFE give a good indication (but is a not 100% stable).
For capacitors the capacity is usually rather close, but the tester have an issue with ESR.
Test a few capacitors, or the same one a few times, and the ESR will change (or be set to 0 ohm), and even show different ESR depending on what pins you test with. The solution is to re-calibrate the tester, and (at least) the next measure will have a more accurate ESR measurement. Don't forget to discharge capacitors, even between two tests!
The built in battery measured a capacity of 1.56Wh and will let you do many tests before it runs out. Every time you turn it on it will show the battery voltage. Be aware though, there is no low battery warning, when it runs out it will remain dead until charged.
Jan 19, 2017
Good product
Excellent quality for the price. It both looks and feels good to use. The USB connections are tight and firm (low risk of USB devices getting disconnected by accident or having poor connection). Performance appears good, little to no performance difference when using a 95MB/s USB device, but i haven't been able to test with faster devices. The cable is short, so additional DC power should normally not be needed, but if you're using several power hungry devices such as an external HDD it might be recommended with extra DC power. I bought this as one of my laptops only have one single USB 3.0 port, and this hub have successfully extended it to 4 ports for a very low price.
Sep 09, 2017
Genuine replacement mic for the A405, A409, ACM1H or ACM1HB
This mic will replace either the A405, A409, ACM1H or ACM1HB, as they all measure the same.
I first suspected this mic to be defective as it measured different from my previous mic from 4.5kHz and up. However, after comparing it to a brand new Denon ACM1HB mic, i found out they measure identical to within +/- 1dB, and it was actually my other mic that was defective.