Thanks for the replys, the TLV2372IP looks intresting, still expensive more then 2 euro.
What other characteristics do you need? That can have a large impact on component choice.
Even many op-amps that claim to be rail to rail have considerably lower performance as the output nears the rails.
The rail towards 0 volt is most important to me, the high rail does not matters, i wont get to 12 volt.
Presicion is important to me, since i use it for a control voltage in a voltage controlled oscillator.
Now i am using a NE5532, only the low notes are below the rail,
any rail improvement is welcome, i better like a cheap opamp with a bit wider rail then a 2 euro opamp with almost no rail.
Anyways the NE5532 is a small improvement over the TL072, maybe there is another "normal" opamp with less rail ?
Low noise is better i think, speed dont matters for me.
How presice is it compared to a TL072 or NE5532 ?, they work fine, you call that presicion or no presicion ?