Correct iMP 550 ac adapter

[blmcycle103046]

I just bought a 550 on close out. I have read on this forum that the Sony AC-E45A ac adapter can be used with the 550. It is rated at 1000mAmps. iriver sent specs for the ac adapter for the 550 and they recommend 1.2Amps. Is it ok to use the Sony even though it is rated at 1000mAmps?

Also, does the 550 require a regulated AC adapter? I asked iriver this question twice and never got an answer. I ask because I bought a 4.5v Radio Shack ac adapter that is rated at 1600 mAmps. But the package does not say it is regulated. When I turn on my head phone amp hooked to the line out I get a hum with the Radio Shack adapter even though the 550 is not turned on. As soon as I power on the 550 the hum goes away.

I just want to make sure I wind up with the correct AC adapter and don't damage the 550.

Thanks.

[adam917]

Originally Posted by blmcycle103046

I just bought a 550 on close out. I have read on this forum that the Sony AC-E45A ac adapter can be used with the 550. It is rated at 1000mAmps. iriver sent specs for the ac adapter for the 550 and they recommend 1.2Amps. Is it ok to use the Sony even though it is rated at 1000mAmps?

Also, does the 550 require a regulated AC adapter? I asked iriver this question twice and never got an answer. I ask because I bought a 4.5v Radio Shack ac adapter that is rated at 1600 mAmps. But the package does not say it is regulated. When I turn on my head phone amp hooked to the line out I get a hum with the Radio Shack adapter even though the 550 is not turned on. As soon as I power on the 550 the hum goes away.

I just want to make sure I wind up with the correct AC adapter and don't damage the 550.

Thanks.

As long as the Sony adapter is the right polarity & voltage, it should work fine. It will charge a bit slower, but it shouldn't be an issue unless you are in a hurry and have run the battery far down.

[blmcycle103046]

That is what I thought. The Sony is 4.5 volts and has a plug with center positive that is what the 550 needs. It seems to be working fine, and I will take the Radio Shack adapter back.

[U10]

I use the Sony AC-E45A all the time for charging since getting the 550 on closeout. It has never failed to work or cause a problem. The Sony "gumstick" batteries work well.

[nevar9]

I need a new adapter as well, since mine got lost during travel.

Its hard to find a Sony here, so i wonder if this one will suit?

Universal Ultra AC Adaptor, 15 W. 1200mA. AC100-240V input. Foldable AC plug. 6 Tips for most devices. DC Output: 3/4.5/6/7.5/9/12 volt. Adapter plugs: 0.75x2.35mm, 1.35x3.5mm, 1.7x4.0mm, 1.75x4.75mm, 2.1x5.5mm, 2.5x5.5mm. Resettable short circuit protection. Power LED indicator. Voltage selection switch.