After having a run around with dual supply and single supply op amps not working easily with input signals that have -ve components, I stumbled upon the LM386.
It has output biasing "Ground referenced input, Self-centering output quiescent voltage" which means that even though you're giving it a single power supply that is only GND-positive, it can amplify input signals that dip negative and reflect that in the output. Very useful indeed.
It seems that the LM386 is optimised for audio range applications and I wanted to look for other self centering op amps with other characteristics. To cut a long story short, I want to make a general purpose amplifier project box that I can plug into other applications. I'm sure there's tons of issues with that (including frequency adaptive filtering, shielding, connection capacitance) that are outside of the scope of this question.
So how would I find a list of other op amps that are self-centering like the LM386 that are in DIP packages?
I've tried Google and it's not helped. Farnell's (Element14) site doesn't seem to have filters for that.
Currently I'm manually looking at each datasheet, but surely there's a better way? (BTW, I've not found a single other self-centering OP AMP)
Thanks.
EDIT: I incorrectly reffered to the LM386 as an op amp, not a power amp. Discussion has somewhat evolved since the original question.