Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: We have outdoor speakers. Can you add additional speakers to this unit?
Document: The sound is clear and undistorted - the bass response is impressive for such a unit. I have a Bose waveradio - it is nice too , but the sounds quality of the Yamaha is superior as it allows you to separate the speakers (either side of shelf) making a higher quality sound "image". I also have had trouble through the years with Bose CD players breaking on me. )The photo's here are deceiving - the MCR-140 is deep.
It's solid - it almost feel like a dense hardwood with metal shielding in the front (the colored part). There are no thin and small pieces to vibrate around. The bottom has nice padded feet. The speakers have rear sound ports to improve the bass response.
I ran my input cable below the unit, and it pops up just below the jack and plugs in neatly.If you have spent time making your office/room look nice, want excellent sound with digital capability/extendability, you should seriously consider one of these.
I didn't have the space quite, but I was able to have it protrude out the front about a 1/2". Good thing the unit pieces are attractive(especially white), so protruding out a bit isn't a problem. It's relatively short and low profile , which is nice for a bookshelf.
All we needed was a mini shelf stereo. I looked at everything out there and the Yamaha MCR-140 was the best designed both in form and function. And one of the most expensive in this class. We purchased this unit in August of 2012. It just goes downhill from there. You need a PC to format your flash drive to use the USB connection. So, all the music I have in my Mac itunes is useless. We were left with a radio and CD for our music.
Really? Only after 4 months and a dozen times used? Then I called the 24 hour helpline. After being on hold for 1/2 hour, I hung up and used their email tech support. I was referred to a site to find my nearest Yamaha repair site. Thankfully, the repair shop is only 10 minutes away. After dropping the unit off, I get a call the next day that the cd part is back ordered out of Japan.
So far so perfect!Update: 2 years later still going strong, hope I am not jinxing it with this review! :-))
It finally happened:  our local favorite classical FM station went to rock&roll; format. We had to get a new arrangement for our home office - something that could help us listen to classical music off web radio.I wanted it to amplify iphone and external internet radio (Logitech Squeezebox) and still be able to play regular CD's. Moreover, the color matching was important for us as we just remodeled our home office. I saw the reviews here on the Yamaha MCR-140 and decided to purchase it.
I just bought it recently so I would have to write an update if it breaks soon - otherwise, the sound is quite amazing. I don't have a comparison versus the Bose (some people suggest, though, that the Yamaha is better + it costs half the price) but I was using a standard CD player before, and in comparison to that the Yamaha sounds as if you were in a concert hall.
I can not remember when I was so disappointed with such a solid brand as Yamaha. Hey Yamaha get it together!!! You've lost my confidence and my recommendation.
Answer: The unit does not have outlets for additional speakers; however, for about $10 (Radio Shack) you can get an expansion pad that allows you to connect additional speakers.  You just connect the pad to the speaker connections and then you will have an A & B capacity.