Review on RCA 2-In 4-Out Stereo Audio Switcher Plug & Play Compatible With TV, Blu -Ray Player, DVD Player, CD, Amplifier And Speaker by Michael Duman

This is a well-constructed passive stereo analog audio switcher with RCA inputs for up to 6 devices and one RCA output. It has a conveniently small footprint - about the size of a credit card though about an inch longer - and the shell is sturdy, made from metal, not plastic. This is a completely manual device so it can not be controlled via a remote control or a hub. On the top of the unit are two analog dials. One allows you to switch between devices, with the dial solidly clicking into position for each device. The other one, labeled "volume" allows you to control the degree of signal passing through to your output.The most important quality of a device of this nature is that each input channel is clean, free of noise or bleed-over from the surrounding channels. In this respect, this device is a winner. I'm currently using this switcher with three devices on the first three inputs, and with audio concurrently feeding from each device, you get no spillover across channels.That said, I have yet to determine the purpose of the "volume" control on this unit. Since the Dingsun 6-Way Audio Switcher is truly passive, with no source of power, it is not an amplifier. This needs to be connected to either powered speakers, a soundbar, or to an amplifier, and each of those will have their own volume controls, making this feature appear unnecessary. That said, I leave this dial at its max setting since I see no reason to impede the already low-powered signals going to my soundbar.However, the main thing keeping me from ranking this five-stars is the price. For a basic analog stereo switcher, it costs 1-1/2 to 2x more than some other capable switchers, many which also allow composite video switching as well. To be fair, those units are not generally as sturdy, are often made from plastic, and tend to take up a larger footprint, so it these are important factors for you, this is a sound choice. But if functionality trumps form, you might want to consider one of those alternative instead.