Of course, the contribution of the surrounding circuitry still needs to be considered.A lot of how big a signal it can handle depends on the size of the power supply. Will post again if I remember where they were.įor noise-sensitive synth applications at higher impedances, the LME49720 low voltage noise of 2.7nV/√Hz is much better than TL072 because 18nV/√Hz may have been low noise 30 years ago but isn't really now. frequency graphs for TL072, NE5532 and LM4562 but can't place where I saw them.

The fact that 5532 is only stabilised for a closed loop gain of 3x, and has much lower input impedance than JFET designs, is not a concern in that application. Which is why commercial pro audio is full of low cost NE5532 opamps and not TL072. So devices with low voltage noise, higher current noise, and much lower resistor values than are typical in modular synths (for low Johnson noise) can give significantly better results. An audio preamp typically needs low noise and high gain, and typically doesn't care about current draw. Note that my original statement was not 'I prefer NE5532 over TL072 for everything' but instead 'If you are using it in an audio preamp, wouldn't an NE5532, or LM4562, or LME49720 be a better choice?'. Plop, I guess marketing slogans have greater longevity than technical specifications do. Now both are specced at the latter value. As you say, when introduced they had somewhat different noise specs of 25nv/√Hz vs. Thanks for digging out the 30 year old datasheets. Synthbuilder I missed your earlier reply, sorry.

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