What is the power source?
1040775
Unlike the Studio headphones, the Beats Solo HDs do not require a power source, similar to the way that earbuds don't need a power source, either.
1172412
Sorry, don't understand this question. Extra power supply to what? My review was about the battery charger and it doesn't come with a power supply. You provide the power supply by plugging it in to an electrical outlet.
114674
Yes. I just checked the owners manual on line and that is the power source for that unit.
1953976
You can use either power source. It comes with an AC adapter. I purchased a separate battery pack for travel.
1331295
It is powered off the USB bus. I use an adapter plugged into 110 volts to insure constant adequate power (because some USBs have more power than others).
853076
no external power source, it does plug in and run from any 120 volt outlet. hope this helps
1391875
you don't need a power source, the display goes when you cycle. comes with a battery.
366426
Power source only. You use a wired connection to set it up, then it is wireless.
1288910
The other answers are correct. This needs to be plugged in to a power source.
1057937
we bought this from amazon and it came with the power source. you have to have the power source
480561
Hi jody it is powered by both,the ac plug adapter and then the battery for backup.only thing though the battery keeps falling out when moved to fill so I finally just taped it and that holds it in but wasn't happy for the price that is has that flaw.
1243229
I'm not sure I understand your question. It is an electronic device so it needs a power source. The battery is built-in, and can be recharged through a USB port on a computer or laptop.
472270
If by power source you mean battery.. The pen top unscrews where a USB port is exposed and this is how you charge it.. It takes about 5 hours to burn through the stored energy however I used mine so much that it no longer works. Very novelty but that's pretty much it.
1835480
No power supply. You can purchase one fairly cheap or use an injector. Unit works great hoeever it is powered!
1174722
I am not sure how it works? It looks like to me it has to be hooked into a power source somehow. I could use some help here as well.How do you hook it up?
1428440
My impression is that NO, this is a power source. It is used when one has a DC powered appliance and wants to use the appliance with AC power.
359686
the power source is the recorder itself. they plug into that along with the video cables. the hard drive has to be plugged in.