Hi-Fi Phono Preamp (RIAA Equalisation)
The NE5532 dual op-amp is a particularly good choice for this preamplifier. This dual op-amp stands out due to its low noise, high speed, and excellent characteristics. Moreover, it is cost-effective, making it an attractive option. The NE5532 dual op-amp is ideally suited for this kind of application, due to its aforementioned qualities.
Noise levels in this preamplifier are extremely low, a feature attributable to the fact that any noise from the amplifier stage is rolled off above 2kHz with the passive filter. This ensures that the output is clean and devoid of any unwanted noise.
Another opamp that is highly recommended for this preamplifier is the OPA2134. This opamp is known for its superior performance and is used in the creator's own units. The OPA2134 is another excellent choice for this preamplifier, due to its high performance and compatibility with the overall design.
In conclusion, this phono preamplifier schematic is distinguished by its accurate RIAA equalisation curve, low noise, and high performance. The choice of opamps, particularly the NE5532 dual op-amp and the OPA2134, contribute significantly to its overall performance and make it a standout in its category.The phono preamp shown has an accurate RIAA equalisation curve, is very quiet, and offers far better sonic performance than the vast majority of those seen in magazines and application notes. Like most other ESP projects, it is very tolerant of opamps but the NE5532 dual op-amp is a good choice.
This is a low noise, high speed device with excellent characteristics, and is inexpensive. It is ideally suited to this sort of application. Noise is extremely low, since any amplifier stage noise is rolled off above 2kHz with the passive filter. Another excellent opamp is the OPA2134, and these are used in my own units. 🔗 External reference
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