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Total harmonic distortion or THD is probably the more regular little T.L.A.s (or 3 letter acronyms) you are likely to see in most manufacturers specifications. But what exactly is THD, is it all that important and what amount of THD is appropriate for HiFi and AV equipment?

In audio reproduction involving the input stage and output stage of hifi audio rack you will see a certain amount of noise and distortion brought to a signal. A number of this distortion is created by the circuits and physical elements introducing signal harmonics at double and triple the frequencies from the original signal. These added signals are technically known as Harmonic Distortion. THD is a way of measuring the differential involving the input stages in the system as well as the audible extra signal at every harmonic. The THD calculation doesn’t think about the relative amount of each harmonic. EG: One amplifiers output in the 2nd harmonic may be greater than the output in the 3rd. Another could create equal levels at the 3rd and 5th. The two amps would sound very different yet could have the same measured overall THD.

In many hifi circuits like amplifiers and pre amps you need to expect a value of less than 1% THD since it is easy to get rid of a large amount of THD from amplifier circuits using various techniques. Unfortunately it is actually far harder to stop significant levels of THD from being made by the physical components of a setup like the Topping DAC. Greater degrees of THD are normal in cheaper end speakers especially at higher volumes. Speakers rich in levels THD tend to cause “smearing” of audio, and bring about poor imaging along with a “muddy” sound. In fact you need to test a component ideally in the room it is to be found in and also at a volume level it is likely to commonly be heard at to find out when the product is appropriate for purpose.

Your property cinema system or audio visual system will require a particular amount of cabling to maximise possible sound quality of your own system. Therefore you should maximise your equipment with digital connections to each audio visual component to get the best listening experience. The very great news is you can obtain noticeable quality of sound improvements out of your home cinema system through using suitable digital HDMI interconnects (High-definition Multimedia Interface).

In the following paragraphs we explode the market biased HDMI Cable Reviews and explain to you how with inexpensive standard HDMI cable you are able to achieve excellent results and boost your home cinema listening experience and get noticeable quality of sound improvement using your audio visual system utilising the accessible digital connections.

Choosing the best HDMI cables for your own personel system is a fairly straightforward process and there are a few things to be considered before buying. Firstly, do not get brainwashed by retail shops that try to sell the eeogzu expensive cables because they want you to invest as far as possible as opposed to knowing the needs or requirements of your house cinema setup – don’t be fooled.

So what HDMI Cable would be best suited for my home cinema system?

Firstly, the essential principle behind HDMI is always to transmit uncompressed digital data via 2 interfaces and digital data cables ought to be mainly compared by the caliber of the components and manufacture. The Shanling amplifier available seem to focus on the more you spend the more you achieve – well stop and reconsider. Top quality output of an affordable HDMI connector cable provides the same results as spending 10x or 20x more.