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Not much money, but it's the principle. The supplier sent me a note saying that the deficient product description they published was supplied by the manufacturer, so it wasn't their fault and have not offered to take back the merchandise and issue a refund (it's still sealed in its original package). The Amazon product description for this device did NOT indicate (as literature with the product did) (1) the polarity of the output plug -- it was wrong for my application, and (2) that this device should not be used with a radio -- it was wrong for my application. If I had found the package on display in a store I would have known this immediately, and have passed it up.
It has a already paid for itself in the cost of batters, recordings esp at HQ drains batteries and dictation also drains even more.Save money if you use a Sony Digital Recorder, get this product. I use a digital recorder daily, with raising cost of everything, this product is an excellent money saver.
A better design one would expect from Sony. When current draw is very low, it produces 120 Hz noise also. This switching supply generates radiated and conducted interference. I can't recommend it for powering a radio, or operating it in the vacinity of a radio.
Everything is good about this product and it works as explained. Just the product I wanted. I spent a lot of money on batteries for my everyday recording.
The cord is extra long so it is very convenient to use. I have 6 Sony MX-20 digital recorders and I got tired of replacing AAA batteries so I purchased 3 of these AC adapters and they work just fine.
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