First of all, you need a power amp to bring volume up - and to control the output gain, Otherwise what you get is the sound of the strings vibrating near a magnet, and barely anything else than this. You should consider getting something like the Avalon U5 as a preamp, then it should tighten up significantly and play well through most speakers.
Do keep in mind that the smaller units may have trouble reproducing the lower frequencies, simply due to physical limitations.
Do keep in mind that the smaller units may have trouble reproducing the lower frequencies, simply due to physical limitations.