Since the word with HIFI, then the amplifier is a must, directly connected to the computer or CD player, at best, there is a sound only, completely spoiled HIFI speakers. I personally think that the amplifier is more difficult to choose, because the gall bladder flavor and electronic flavor is still quite a big difference, you can start from the beginning of the transistor, amplifier, I recommend domestic * HanSheng * this price point of similar products is considered mid-range, but the sound did not say. And the source, you have to have a good source, it is best to be able to put lossless mastering electronic products, such as high-end APE FLCC player. However, it is still recommended that the CD-amplifier-speaker combination

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