What is the difference between a preamp and a phono preamp?
In the context of turntables, the terms phono stage and preamp are generally used interchangeably. And generally means the same. In a broader sense, a preamp can be more than a phono stage. A preamp can, for example, be a preamplifier for a microphone or analog sensors.
How does a phono preamp work?
A phono preamplifier, also known as a phono stage, is an audio component that amplifies the signal from your turntable to a level that allows you to connect it to your sound system the same way you would with any other audio source.
What is RIAA in Hifi?
RIAA equalization is a form of pre-emphasis on recording and de-emphasis on playback. The net result is a flat frequency response, but with attenuation of high-frequency noise such as hiss and clicks that arise from the recording medium.
Do you need a preamp if you have a receiver?
You do not need a phono preamp if your receiver has a phono input. The same goes if your record player has an internal preamp. But that does not mean you shouldn’t get one. In most cases, the phono preamplifiers included in receivers or turntables are low quality.
Does the RIAA still exist?
Its members consist of record labels and distributors that the RIAA says “create, manufacture, and/or distribute approximately 85% of all legally sold recorded music in the United States”. RIAA is headquartered in Washington, D.C….Recording Industry Association of America.
| Abbreviation | RIAA |
|---|---|
| Website | riaa.com |
Which is better RIAA or phono preamp circuit?
Phono Preamp Circuit The phono preamp described here has an accurate RIAA equalisation curve, is very quiet, and offers better sonic performance than the vast majority of those seen in magazines and application notes. (This is of course subjective, and is based on countless reports from those who’ve built it).
What is the total gain of the RIAA preamplifier?
The total gain of the preamplifier is about 37.9dB. This will give you around 400mV output from a cartridge giving around 5mV of output. The complete schematic is available for download HERE. Here is the predicted nonlinearity of the RIAA equalization for this project (+/-0.3dB):
What kind of amplifier does RIAA equalization use?
NE5532 is a dual operational amplifier, designed with particular emphasis on performance in audio systems. Alternatively, you can also use LM833 on TL082. RIAA equalization is actually a low pass filter having transition points at frequencies of 2122Hz, 500Hz and 50Hz.
How is output impedance equalized in RIAA schematic?
Of course when calculating RIAA equalization some parts of the schematic must be taken into account. Since the output impedance of the common cathode stage is pretty high it can not be neglected. The output impedance is effectively in series with R1 (from the link), altering it’s value.