Instruction: Carefully assess the user's review for any strong expressions of sentiment, either positive or negative. Based on your analysis, select the most fitting sentiment option from the provided list as output.

Input:
I purchased these speakers with a rebate and got them for next to nothing.  They have a volume and treble/bass control on the front of the right speaker as well as a button to simulate 3d sound.  The right speaker also has a mic and headphone jack.  The overall sound quality is a step up from unpowered standard pc speakers but it is not on par with other pc speaker systems that cost just a little bit more.  If you are looking for an inexpensive upgrade from non powered speakers and can get these at a reduced price you shouldn't be dissapointed.  If you are looking for good quality sound for say MP3's then look to a Altec Lansing system or other brand with seperate sub-woofer.

Options:
A: very positive
B: positive
C: neutral
D: negative
E: very negative
Answer: B: positive