J-Tech Digital 8x8 HDMI Matrix Switch Switcher HDMI 2.0 HDR 4K@60Hz YUV 4:4:4, HDCP 2.2/1.4, 18Gbps, EDID, IP/Ethernet Control, Compatible with Control4 Driver [JTECH-8x8-H20]

Excellent audio quality with full metal casing and pinch connectors. Does not require batteries or ac power. Much better than the screw connectors which come loose. Nice heavy unit which allows for 4 sets of speakers to be split off a single wired pair input. Speaker pairs 1-4, can be selected individually or all together. A great unit for a very economic price. This unit is not comparable with the Realistic Radio Shack version which is plastic with screw type connectors which come loose. I've owned both units and highly recommend the J-Tech Digital unit.

The J-Tech Digital 4-Channel Power Stereo Speaker Selector is a very fine product for what it is. The term "Digital" is misleading since this speaker selector is a simply a set of four switches that allows each of the four speaker pairs to be connected in parallel to each other. There is an optional power resistor that can be added in series (by a switch) with the parallel speaker network to prevent the load impedance from dropping too much as speaker pairs are added to the electrical network. However, the individual components that make up the box are conservatively specified which should make for a very reliable product. There will be no noticeably loss of output audio levels as long as the user does not need to push the audio power amp to its high-end power limits. If this is the case, it might be recommended to use four separate auxiliary audio power amp boxes to drive each of the 4-channels separately.

This worked well with the speakers, but the 12 gauge wiring had to be modified down to 14 gauge as the springs kept popping off

Great product.....everything worked as it should when I connected my four speakers that were powered by my Pyle Amp that had only one set of speaker output terminals. No loss of power whatsoever. My garage never sounded so good. At this price its a steal. Lastly, I had no problems at all with the connectors as some reviewers have stated. I used metal pin connectors crimped to my 16 gauge wire. They held very well. All in all....a great purchase.

When you spend almost a grand for a 8x8 switch you kind of expect a few things like . . .- Documentation that matches your product. Seems stupid not to be able to find the web login and password and then have to call in for it.- A serial port that you can set to something other than 115,200. That rate is not supported in some legacy equipment like older Global Cache Units.- Alternatively an API to use to make the switching calls.- commands that are not translated well into English. If I want the same input showing on all outputs (via the serial) the command actually sets 1 to 1, 2 to 2, etc.- since EDID is noted it would be nice to block a user to trying to send a 4k60z feed down to a 1080p,- only supports 3 EDID values.It is a decent unit, just not well positioned and documented.

This is a product that I would like to give 5 stars, however, the click terminals are very flimsy. The springs tend to pop out along with the plastic part that presses against the contact. I was able to get the part reassembled but did not feel that there was enough pressure to hold the speaker wire secure. I fixed that with a rubber band. I might add that I spent close to an hour looking for those little springs only to have them pop out again.Now that I have it working, it does a fantastic job of routing sound to various zones

I have 3 sets of Stereo Speakers, My back yard, the sun room and the family room. With the simple flip of a switch I have great sound in one two or all three areas. The connections were clearly labeled which made it easy to install. The ability to match speaker impedance based on the number of speakers selected prevents the Stereo system from overloading. I would highly recommend this Speaker Selector Switch.

I've used numerous 4x4, 6x4, etc. matrix devices. Needed a device to handle more ins/outs for my home office.Initial setup is straight-forward. Like the IR extender so I don't have "reach" to aim the remote at the device which is tucked away under my desk. Overall the device works as expected, with some minor glitches:1. The way the device seems to function you have to press a command button once to "wake up" the unit.2. Some inputs have trouble "hand-shaking" with the monitor through the matrix. Still figuring that out.The biggest feature this unit is missing is pre-sets, which quite frankly really surprises me, especially when you see how they market the unit. You can't create pre-sets for you most used configurations. You can reset to "default" (output 1 > source 1, etc) but that only solves for 1/4 of my needs.Support team has been super responsive.