Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: What is the power input for the sub?
Document: I have a mid-sized room with a very high ceiling. The XS has plenty of power. The wiring is actually minimal. The sub unit is pretty small and unobtrusive and the speakers are also small and look very sleek. So aesthetically I am pleased with the outcome.So thanks to all the other Amazon reviewers. I hope this one is helpful too.
First and foremost, I get great sound from little speakers (plus a medium sized sub woofer which also serves as the amplifier, power supply, and just about everything else.). However where I found this system shined was in my office, connected to my computer. Beyond the excellent sound, it just fits very well there.
Just purchased this system over the Sony 260 system mainly do to the size difference. The sound is great for both voice and with movies and the system was very easy to install, 30 minutes, plus extra time to program the cable remote and the blue tooth. If there is a con, it's the extra wiring you have to deal with as the sub provides the power to the speakers which are wired. The small footprint makes up for this in my opinion.
Firstly these speakers sound good ( I am a live sound engineer). They could be better but for their size and price I think they're a great value.My issues are with the noise the power supply in the sub woofer it seems to emit a constant high pitched sine wave. It's not apparent when the volume is up but if you mute the system or even have it running low it is bothersome.
Now the issues I had. System seems to hunt for activity every five minutes or so. Even though nothing playing on any input going to system, I would see the lights on remote module come on for several seconds and then shut off. Annoying! Next, system would shutdown randomly while listening to music. System would power back on after several seconds. Deal Breaker! I didn't try Blue-tooth, but did use the other 3 inputs and got same results on all 3 inputs. Not acceptable.
Sometimes all the lights go out (while it's still playing) but you can still control the set with the remote. Other times the lights go out, and the set seems to have gone in some kind of stand-by mode which requires you to press the &#34;power&#34; button on the remote again first.All in all, this thing is highly recommended!
Seems related to the wireless remote. If I unplug the remote or cycle power, the noise goes away.2. No treble/bass adjustment at all. It would be nice to have very basic treble adjustment. Movie mode has more treble, which helps.Overall, it was totally worth the money.
bought mine refurbished, I will say this now. this said, the first thing I noticed is that it doesn't quite have the power to fill a room with dimensions of 25' x 14' - the volume is about 3-6 db insufficient IMHO. this would work well for a typical shoebox apartment, though.
Horrible product and customer service. Often, the subwoofer needs a few seconds or minutes to turn on, after the music has started playing. Sometimes, the subwoofer decides not to turn on at all. I need to power the subwoofer off, and then on, to get it to work properly. I have tried (unsuccessfully) for several months to get Boston Acoustics to replace this clearly defective product.
This makes it rather annoying to use as computer speakers but the fiber optic input is always on and works brilliantly.
Answer: if by "power input" you mean AC wall current, it is standard 110 volt/60 cycle- if  you mean what amount of power the audio inputs can accommodate, I would think a preamp would be sufficient, I use the headphone output from the TV/CD player to drive mine. I hope this helps.