If you really want to compare, each opamp type must work under optimal condtions and this isn't the case, very often. You don't really compare the opamp itself rather where it is.klitgt said:Lovers say NE5534 is much more musical than FETs.
The opposite point of view is that FETs are less grainy, especially in the high octaves, and therefore "sound better".
nuvistor said:Ialso the 5534 comp pin (pin 5) can be used with 5 - 10mA current source for a class A CFP output stage that bypasses the on-chip short-circuit protection,
Does the source (manufacture) matter for 5534?
Why do you have to spill out all the secrets about this wonderful chip?
nuvistor said:Interesting comments on input stage headroom. You don't mention feedback network configuration, assuming unity-gain follower with 22pF Ccomp and 10kHz input, 5534 has Avol of 60dB, input stage gain is 13k/(0.026/200uA) or 100, so 2nd + 3rd stage gain is 10, and voltage on pins 1,8 would be 10V/10 or 1V. IOW the negative feedback reduces the 1st stage voltage swing by the available Avol and the closed loop gain Acl, more Avol and less Acl will reduce the swing.