The NE5532, also sold as SA5532, SE5532 and NG5532 (commonly called just 5532) is a dual monolithic, bipolar, internally compensated operational amplifier (op amp) for audio applications introduced by Signetics in 1979. The 5532 and the contemporary TL072 were the first operational amplifiers that outperformed discrete class A circuits in professional audio applications. Due to low noise and very low distortion, the 5532 became the industry standard for professional audio. According to Douglas Self, "there is probably no music on the planet that has not passed through a hundred or more 5532s on its way to the consumer". The performance of the 5532 remained best in class for almost thirty years, until the introduction of the LM4562 in 2007. As of 2021, the 5532 remains in mass production as a generic product.

Unlike many other low-cost op amps, the 5532 exists only in a dual form, available in 8-pin PDIP, SO and SOIC packages. The single 5534, as well as the discontinued uncompensated dual 5533, is not fully compensated and is thus unstable at unity gain; the 5534 has lower noise density than the 5532 but is otherwise similar.

The op-amp was originally made by Signetics and sold by Philips Semiconductors as TDA1034 and later renamed.

The 5532 is fully bipolar, with the exception of a sole JFET within a bias generator. Although the manufacturers did not release a first-hand explanation of its operation, the schematic has been public for decades. The signal path consists of two consecutive differential stages, a single-ended common emitter voltage amplification stage, and a class B push-pull output follower with a current-sensing overload protection. There are four internal compensation capacitors. The distortion "signature" (that is, the virtual absence of it) of the 5532 is defined largely by the three nested frequency compensation loops wrapped around the second and the third stages.

The input stage uses NPN transistors, thus the input bias currents flow into their bases, and cause negative voltage drop across the ground-to-input resistance. A typical 200 nA bias current flowing through a typical 47 kOhm resistor, for example, will cause a 10 mV voltage drop. These fairly stable shifts in operating points are usually not a concern. If possible, audio designers would allow them to accumulate over several stages, and then block the accumulated DC offset with a single output capacitor. Bias currents may not be allowed to flow through potentiometers, as it causes excessive crackling noise when the wipers are moved.

The inputs of the 5532 are protected with back-to-back diodes rated for currents up to 10 mA; these may open during fast input signal transients, and cause harsh output distortion. The 5532 is intended for linear operation only, and should not be used as a comparator, or otherwise subjected to large differential input voltages.

A typical 5532 operating from ±15 V supply rails retains linearity as long as the input voltages remains within ±13 V range. When common-mode voltage exceeds +13 V or goes below -13 V, the 5532 clips but remains operational as long as either input stays within the power supply voltages. Input overdrive does not cause output phase inversion which is common to the TL072 op amp.

The 5532 stands out among audio op amps in having an unusually high absolute maximum supply voltage rating of 44 V (compared to more common 36 V). In practice, each of the two amplifiers draws a fairly high 4–5 mA supply current, and the plastic package becomes appreciably warm at 34 V supply voltage. According to Douglas Self, using power supplies of more than 34 V is potentially unsafe, and certainly incompatible with most other op amps.