A 60-meter HDMI cable can be a very expensive solution, as well as being subject to severe degradation in image quality.The solution could be to use an Ethernet cable for audio-video.that's howThe most common standard for connecting audio-visual devices is HDMI, with digital technology but with some limitations in the range.For consumer users it is not a big problem, since for the most common uses a cable of a few meters is enough and advances, but for professional use and large environments the perceptible degradation in quality with increasing distances can represent an obstacle.HDMI cables longer than 10 meters can have very high production costs, and solutions of up to 20 or 30 meters can be found on the market.What if you need more range?One solution can be TECHly's 4K HDMI Extender which in its latest version also supports 4K Ultra HD @ 60 Hz resolution (up to 30 meters, @ 30 Hz up to 60 meters).The system allows you to connect the signal source and the display that reproduces it via Ethernet without any perceptible loss of quality.Operation is very simple: the HDMI Extender consists of two devices, one to be connected via HDMI to the source (transmitter, TX), the other to be connected - again via HDMI - to the display (receiver, RX) with which we intend to reproduce the contents.The two devices must then be connected to each other through an Ethernet cable up to a maximum of 60 meters long.In this way you can take advantage of the network connection standard to send an HDMI signal over distances greater than those guaranteed by the technology, without a noticeable degradation in image quality.Transmitter and receiver need an external power supply system for correct operation (already available in the original equipment, from 5V and 1A), while the Ethernet cable and HDMI cables are to be purchased separately.In the box we find the user manual, an IR transmitter and an IR receiver: the latter two accessories are used to remotely control the multimedia system without having to travel the long distances between the receiver device and the transmitter.The new model is naturally characterized by support for HDMI 2.0 connection and HDCP and 3D technologies.The compatible resolutions are all the most common: starting from SD with 480p, up to Ultra HD passing from Full HD, all up to a maximum refresh rate of 60 Hz.It should be noted that 60 Hz are guaranteed with a Cat6 Ethernet cable and only up to distances of 30 meters at the maximum resolution, while to reach the widest possible range (60 meters) you have to compromise by being able to take advantage of a maximum refresh rate of 30 Hz. The company also recommends the use of Cat. 6 / 6A and 7 network cables, especially if you want to cover large distances and exploit the full potential of the connected terminals.The consumption of the two devices RX and TX is about 3W each, therefore negligible compared to the remaining components of the system.We talked about Ethernet cables, so the question arises: can Techly's IDATA EXT-E704K hdmi extender be connected to a network?Unfortunately, the answer is negative, since the device in question uses point-to-point technology, does not have an IP address and the connection is made with a network cable, but without using any protocol to connect with other devices.Point-to-point extenders use Ethernet cable for its physical characteristics, but not to take advantage of network capabilities.An HDMI cable has a larger diameter, cannot be inserted into many conduits and is more difficult to place in the room, while Ethernet is an easier solution to hide and more capable of reaching long distances.TECHly also offers extenders capable of connecting to the network but at inevitably higher prices.The TECHly HDMI Extender also has a decidedly interesting list price, especially if we consider the range that the entire multimedia system can cover: on ManhattanShop it is offered at € 164.20 in its version compatible with the 4K standard.If at first glance the figure may seem high, try to imagine how much it would cost an alternative broadcasting system to transmission via network cable (both wireless and wired) capable of supporting 4K resolution for such long distances.If you can't, we'll tell you: much, much more.