Instruction: Given the user's review, identify the user's sentiment from the listed options. Answer using one of the options.

Input:
speakers are great for a small portable. They are obviously not bassy like the big boys, but they are not too brassy either. The tuning is good, even for a metal house in a major metropolis. This is a life changing purchase.

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