Quote Originally Posted by mister_e
why are you thinking that it will not work with OPAMP even @9V?

What else the project do? Do you need a variable frequency?
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I know there are a single supply op-amp's but it might not give me acceptable sine wave ( amplitude )....and frequency...... if I can do it by op-amp just help me with good one I can use.

For me no need for variable frequency......... I wana connect it to power amplifier. I need my frequency to be stable that's why I need crystal.

I think it should be done in more simple way (n. of Chip used ,cost,....) than what they advice me to do..