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
Related Circuits
A unit which is often very useful, if we need to isolate, in sound circuits, two stage between them. Then we can use this circuit which has an amplified unit, which gain X1, we do not use total negative...
The first half of the circuit (IC1a) features an input sensitivity of 3 mV and includes a frequency correction network consisting of capacitors C5, C3, and resistors R6 and R8. The bass signal from the phono input is amplified,...
In this basic MAR-x-based circuit, both the input and output consist of a single DC-blocking capacitor (C1 for the input and C2 for the output, respectively). The DC power supply network, which includes L1 and R1, is connected to...
The circuit design aims to create a preamplifier for television systems that operates within the UHF frequency range of 450 MHz to 800 MHz. The preamplifier circuit is essential for enhancing weak television signals before they are processed by the...
A dynamic microphone preamplifier can be constructed using the LM387 dual operational amplifier integrated circuit. The input impedance is approximately 47k ohms, primarily determined by resistor R1. If a dynamic microphone with a different impedance is to be connected,...
What is the likely cost of the Aleph Ono, specifically regarding the parts? Is it similar to the Pearl but improved? The Aleph Ono is a high-fidelity phono stage designed to deliver exceptional audio performance. When estimating the cost of...