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 Melota Phillips

This is a solid little box, and it does something I need a box like this to do: take multiple RCA inputs and switch between them to send different signals to my speakers, a pair of active KEF LS50s, which have a limited number of inputs (and incredibly, no HDMI, but that's another story).I hook up RCA cables from my turntable via a Schiit Mani phono stage through this box to the speakers, another set of RCAs from a Google Chromecast thingy, and another set of RCAs from an older Sony DVD/SACD player.The good news is that the channels appear well isolated from each other. My test for this is as follows. The Schiit Mani makes a little pop if you turn it on or off when the speakers are on, so you make sure you turn it off and on when the speakers are not engaged. With the speakers powered up, I switched the Dingsun away from channel 1 (phono) to channel 2, then turned the Mani off and on. No pop, no sound at all. So yes, I got absolutely no bleed-through between the channels with this test.Other good news: the box is hefty and solid enough. Metal case, decent weight, a little heavier than the Rolls A-B box (SS32) that I had been using. The Dingsun has six inputs, the Rolls has just three, which is one of the reasons I got the Dingsun.Some caveats. The Dingsun has a volume knob, the Rolls has none. And I don't think the volume knob is necessary for me—just another thing in the signal path. And interestingly, going back and forth between the Rolls and the Dingsun: even with the Dingsun's volume maxed, the Rolls is slightly louder.And call me crazy, but I think the Rolls sounds better. Usually I don't believe people when they claim such things. But I was listening to a classical record, Rodrigo, Concierto de Aranjuez (London), and by heaven, it was a bit fuller, clearer, and more detailed with the Rolls, At least it was louder.So the Rolls gives me three channels and costs about $20 more. The Dingsun has six channels. But I'm staying with the Rolls, which is made in the USA. Believe me, if the Chinese-made Dingsun sounded better, I'd switch to that. But until I absolutely need more channels, the Rolls wins this.