What sound are you trying to achieve?
Metallica? Guns & Roses?
Classic Rock?
Metal?

That humming you hear..... congratulations. You just found your overdrive/distortion.

Feedback is your friend if you're playing metal.... heck, Jimi was looking for ways to get MORE feedback from his amps.

Overdrive or distortion is literally what it means....

Overdrive means you push the drive past it's limit, breaking up it's sound.

Distortion is pushing it even further until it distorts the sound.

If you buy an effects pedal, you'll get the same thing as turning on the overdrive/distortion on your microcube.

Should be around the Rm180 price mark.....
Am I right?

If you're just going to talk about guitar effects pedals...... there is already a similar thread..... just do a quick search.
I think if this is the case, I'll have to close this thread..... unless TS isn't satisfied with his answer........