[VeritasKhan]

Is sou ka considered to be rough, male speech?

For example:
そう。　　　Sou. - I see. (casual)
そうですか。Sou desu ka. - I see. (polite)
そうか。　　Sou ka. - I see. (casual? rough male speech?)

そう？　　　　Sou? - Is that so? (casual)
そうですか？　Sou desu ka? - Is that so? (polite)
そうか？　　　Sou ka? - Is that so? (casual? rough male speech?)

I ask because I've learned that using か to ask a question without です is typically considered blunt/rough male speech.

Also, what about "sou da"?
For example:
そう。　　　Sou. - So it is. (casual)
そうです。　Sou desu. - So it is (polite)
そうだ。　　Sou da. 　　- So it is (casual? rough male speech?)

Thanks!