1/20/2024 0 Comments Low signal to noise ratio![]() ![]() It is this noise level that is expressed by the signal-to-noise ratio mentioned in the technical specs of the various hi-fi devices.įundamental noise is noise linked to the intrinsic physical properties of components which generate statistical fluctuations in current and voltage. Without going into overly technical explanations, it should be known that there are different types of noise in an electronic system, which are linked to the physical characteristics of the electronics as well as to their manufacturing quality. What are the different sources causing noise? What is component noise, or internal background noise? It is generally considered that a good signal to noise ratio is 60 dB or more for a phono turntable, 90 dB or more for an amplifier or CD player, 100 dB or more for a preamp. Quieter operation makes more subtle sounds more audible. The higher the signal-to-noise ratio of a device, the lower its background noise, in other words the more “silent” its operation. The 0 dB level on the amplifier’s Vu-meters NAD M10 correspond to the nominal signal level. The signal-to-noise ratio (SNR) is expressed in decibels (dB) and indicates the level difference measured between the background noise generated by the circuits / components of a device (hiss when no signal passes through it) and the signal at its nominal level (defined at +4 dBu on analog devices, which corresponds to the “0” level of the VU meters of amplifiers, for example). It is the very functioning of its components (capacitors, transistors, resistors, etc.) that generates this noise. What is the signal-to-noise ratio?Īny electronic audio device (amplifier, preamp, CD player, turntable, etc.) generates more or less intereference signals and background noise which are affecting the sound signal. When buying a hi-fi amplifier, a hi-fi preamp, a CD player, a Turntable, a digital audio player or a headphone amp, many parameters can guide us in our choices: the amplification power and the connections, the type of discs supported and the integrated DAC or the type of drive and the cartridge supplied.Īlthough often neglected, the signal-to-noise ratio is nevertheless an important feature for gauging the quality of a hi-fi element. ![]()
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