Check out these comments from our users:

Jan-8, 2010
I got theTravelStudio today and immediately filled it with batteries, I see it came with an adaptor but I was trying to get a sense of portability so I went the battery route. I plugged it into my little Behringer powered 8 inch speaker and went throgh the [...]

TravelStudio can be powered using either the supplied 6 volt AC Adapter, or by installing 4 AA batteries.  Any AA battery technology can be used, either alkaline or rechargeable.  You will get the most playing time using rechargeable batteries, since this technology provides the highest amp-hour rating.  TravelStudio does not include battery charging circuitry so [...]

One of the nice bonuses of TravelStudio is that it makes a great karaoke player.  You can have a lot of fun searching the YouTube videos for your favorite songs, then sing right along using TravelStudio.  Here’s how it’s done:
1) Connect the (included) 3.5 mm audio cable from the headphone jack on your PC to the AUDIO input of  [...]

TravelStudio mounting features were designed to provide convenience and flexibility.  The mounting point shown on the rear is (using technical jargon) a 1/4-20 (quarter-twenty) female thread.  This type of thread is commonly used on photographic equipment, so there are a number of readily available adapters to fit.  Your TravelStudio comes supplied with an adapter that [...]