MFJ-4275MV MFJ-4275 Original MFJ Enterprises Switching Power Supply 13.8V 75A Meters

Best power supply I bought

For some reason my unit failed after 1 year of use. It was just supplying power for my receiver and not under a heavy load when it quit. Overheat protection was the fault and it was $55 to get repaired. Fan was always noisy. Be sure to keep your receipt for the warranty work.

MFJ did it again. The amp is quality made.

Thus far so good. I have not put more than 30 amps on it ... yet. I have noticed no noise. Something I do not like - there is no dedicated ground connection. I find this awkward that I need to dissemble a premium power supply to install a stupid ground lug. In addition, I purchased a combination digital voltmeter USB hub to help me feel better about myself, surely it has nothing to do with function. This would be my only suggestion for the next model is to include these three items. The fan is not noisy and there is no electrical hum, I have seen the same unit cheaper elsewhere and I wish I had shopped around. Since it was not Prime eligible from GigaParts it took quite a while for it to arrive. I have recommended device this to my friends.

Item as described and delivered as promised works great

Thank you I have no problem with the item the item that you working perfectly thank you very much

I have the power supply set up in my radio room charging my backup battery for the shack and powering three of my radios right now.

I just receive my MFJ-4275 power supply 13.8v 75 a meters today 8/2/21. Thanks,

This power supply is the best that I have bought before , better than others .

It produces birdies at different frequencies. Otherwise ok.