J-Tech Digital J-Tech Digital Premium Quality SPDIF TOSLINK Digital Optical Audio 4x2 Matrix (Four Inputs Two Outputs)

the unit works flawlessly well made,there is no volume control.

Firstly, Amazon screwed up the first time and sent the wrong item - a similar switch from another supplier that cost about a third less, and worked only about a third as well. Sometimes it takes using an inferior product to recognize the incredible value of a quality item. I've used J-Tech products before and have always been impressed by the overall quality of manufacture. The J-Tech 4x2 matrix SPDIF TOSLINK switch might look like similar, less-expensive items, but it's much better built. The housing is very durable and the electronics are well-constructed. In contrast, the other switch had a cheap metal housing and some of the TOSLINK jacks actually physically disappeared inside the device when trying to connect an optical cable to them. Those jacks were evidently soldered directly to a circuit board without any physical support to hold them in place. In contrast, the J-Tech components are solid and reliable in use. In terms of functionality, the J-Tech switch functions very well and it's easy to use. The remote control works well but not at a distance, which is my only complaint. Selection of inputs for each of the two outputs is easy, and I like that they're independent of each other. That way, one can even have the same input connected simultaneously to both outputs if desired. Sound quality is excellent, as would be expected with digital signals. Overall, this is an excellent device.

This little Optical Audio Switcher (I have the 4x2 model) is excellent. It's built well, and it's the second J-Tech product I have purchased (the other is an HDMI/Audio Extractor) that simply works...so I now have added J-Tech to a small group of outstanding sellers here at Amazon. The only issue, as stated in other reviews, is that the small remote control has very little range. It must be pointed EXACTLY at the IR receiver on the switcher, and it looks like the range is only about 6' at best. So, keep this in mind if you normally are seated more than 6' away. However, if you plan to or already use a universal remote control that can "learn" from the supplied remote, this completely solves the problem. I have programed a simple Harmony remote (the J-Tech switcher IR codes are in it's data base), as well as a complex URC remote (which easily learned from the supplied remote), and both remotes control the J-Tech switcher from across the room (about 20'). The use of a universal remote brings up a separate issue for me...it's that the switcher only has a "Power Toggle" button (same button turns it on and off). This is typical for this type of product, so I don't hold it against J-Tech. However, if anyone has ever tried to program a universal remote control, you know that any device that does NOT having discrete "Power On" and "Power Off" commands can get out of sync when using macros (press a single button on the remote, and the TV, Receiver, Cable Box, Audio Switcher, etc. all turn on and switch to the appropriate input...press another button and everything turns off). For any product that only has a "power toggle," the only sure-fire solution is to keep that device always turned on. I have asked J-Tech if it's ok to keep the Audio Switcher powered on all the time, and I'm waiting for their reply. The bottom line is that this is a solid device that works as advertised.

I'm using this with two sources, digital audio out from a TV and digital audio extracted from an AppleTV 4K, and two outputs, a DAC and a wireless headphone. Both outputs are active simultaneously and can be used with the same or different sources. The remote works well and includes a power button and 4 source buttons for each of the two outputs. With 96 kHz 24 bit lossless format audio from the AppleTV 4K, I can't hear a difference between connection through the splitter or direct. This is a high quality device at a good price.

It works! I just upgraded my computer video editing system to use digital (TO-Slink fiber optic) audio instead of older analog audio. I have a 6x2 hdmi matrix for video input selection that produces 2 TO-Slink outputs and 2 computers with TO-Slink audio outputs. Each pc has its own set of 5.1 speakers that accept TO-Slink 5.1 audio inputs. This 4x2 TO-Slink matrix/switcher ties everything together. I can now route any 5.1 video audio to either computer without having to swap any cables. Fiber optic audio does not suffer from analog ground loop audio hum and it carries 5.1 (6 channels) of audio in one cable. I also like that it can be controlled by a remote control.