I will be using it for active 2nd order Bessel active filter application.
What do you mean by unstable exactly?
should be a sticky.
It explains how to avoid a "very" common problem, and doubly so at DIY, because a natural temptation is "always use the best/newest/fanciest" which per se is fine, but may bring unseen problems.
Yes, the big question regarding the '748 is whether - and how - the compensation and offset pins are being used.Like the original question, we would really need to see the circuit to best advise. . . . The 748 is an uncompensated opamp which means there will (or could be) additional parts to some of the other pins.
That's a balanced-input mic preamp. The 4 transistors create a low-noise front end, and the TL071 provides a moderate amount of gain, differential-to-single-ended conversion, and output drive.Sorry here is the drawing