If you've been looking for a way to select between several stereo amps or receivers to power just one pair of speakers, this is for you. If instead you need the means to select from several pairs of speakers for comparison purposes, the TC-616 can do that too. Commercial duty products that can provide these abilities cost hundreds of dollars and are usually meant to be rack or custom installed in audio store displays; ours will work anywhere, without special plugs or connectors. This is ideal for the small car or home audio dealer needing a way to demo a limited number of products, or for the audiophile who prefers certain speakers when listening to particular kinds of equipment. The diagrams below provide multiple hookup options for various situations; click on them or any image to see larger versions.