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Title: good fidelity; could use a preamp
Review: AudioSource AMP-100 Stereo Power AmplifierThis amp powers a pair of medium two-way speakers for my home theater. Very good sound for the money. As others have noted, the line inputs are not terribly sensitive, and my Blue-ray player's line outs put out barely enough; I crank the amp's volume control almost all the way up with most movies. No one has complained of insufficient volume. (Someone wrote that there is a line-in sensitivity adjustment or a max gain adjustment or the like, but I cannot find it.) A preamp with a 3- or 4-volt line out would solve this problem and add needed spectrum control, but at greatly increased cost. You can power either of two pairs of speaker connections but not both; the spec sheet is a little vague on this point. I wouldn't upgrade from this amp before spending at least $2000 on speakers.
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