What amplifiers work best with the hemispheres?

This is not a product endorsement, but rather just a list of amplifiers we have tried with success. We began working with amplifiers by Crown, and now are using Rane amps — both work very reliably. There are also the portable amplifiers by Stewart Audio, which are a little sensitive, but great and light for luggable performance systems. Finally, we recommend the amplifiers from AcousticImg. Most amplifiers (including home stereo amplifiers) should work well with the Hemispheres.