I am looking for a 10 Watt sine wave generator.Amplitute will be 10 Volt and frequency range will become from 10 Hz to 100 Hz. I've googled it but there are so many sine wave generator types. I just need the answers of these questions.

1)how can I adjust frequency with a potantiometer?What will the pot change?

2)Since current is 1 A, I can not use mP, can I?

3)After I built up the oscillation circuit, can I amplify the signal in order to get 10 Watt?

4) What is your suggestions? (without microprocessors)

Any help will be greatly appreciated.