3.5mm Aux + RCA L/R Audio Switch Box 4 in 1 Out Bidirectional, BolAAzuL Stereo Audio Switcher Selector 4X1 Passive a/b Analog Audio Selector No Power Need

Economical buy to do what I wanted: get input from a music player to the other side of the room but cable+free via ia Bluetooth Tx and Rx, then expand the inputs of a rather old but good quality amplifier via it's "tape" input, at analogue "line level". Could have used it's "CD" input instead. Any analogue amp with an "aux* input should do as well. 'course there are sound bars but they tend to be expensive & there was the old HiFi. Cable run would be cheaper still and few problems at a few hundred mV and middling input impedance. The old amp just needed an extra input. I'm not a Hifi connoisseur mind, but maybe my setup might set off some new ideas here and there.

For the low price of this item I was surprised by the quality of it, solidly built all metal case and switches that make you aware that they have switched. Some would say that the switches and a bit clunky in operation but it does as it should. It was completed by the addition of felt pads adhered to the base plate. All in all I am happy to recommend this item to anyone looking for a switch box.

Superb price, wonderful piece of kit. Well screened. Doesn't create any noise at all.

The media could not be loaded. The switch box is made of metal and held in two pieces by 4 side screws. In my video, I have removed the screws to show how the top and side come away and reveal the internal components. The circuit, such as it is appears to be completely passive, and with minimum components.The switches are noisy, as you will hear when I operate them. Nothing soft touch here, The input and outputs are all double pole with no common connections. The lack of electronics is in my opinion a plus, as there are no cheap attenuation components to screw things up. It's strait in and out via the switching.The basic setup is that you can input up to four stereo, or mono channels, such as cd player, radio, phone, etc and a set of headphones, or a lead to a power amplifier. Whichever button you push will route that input plugged in to the 3.5mm output, be that the headphones or power amplifier/ mixer whatever.So whatever you select will output to the single 3.5mm socket. this will NOT be modified in any way, so 100mv in will be 100mv out, no attenuation or modification. This is a fairly basic setup, but there lies it's rudimentary features, as well as the benefits. Quite well made, but nothing complex or clever.

I bought to attach extra separates to my Hi-fi and it does just that with out interfering with the sound quality.

Can’t fault it. Does exactly what it’s supposed to do without any obvious audio degradation.

Simple operation with a choice of RCA or 3.5mm Jack input, all metal construction

Well made with all Metal casing, very happy with it