We have the ever-popular Ibanez Tubescreamer Mini.

As an Overdrive Pedal

While it may not be as smooth as the TS808 this still offers a beautiful overdrive sound that really makes the midrange pop out. This mid range peak is amazing in live situations when you need to pop through the mix for your next solo. Don't want as much of a peak in the midrange- No problem just lower the tone control and you get a smoother rhythm overdrive tone.

As a Clean Boost

A lot of overdrive pedals with the gain turned down make great clean boosts but nothing sounds like a tube screamer. Even when turned down to 0 you still get a little bit of overdrive but the tone is more consistent with a clean boost like circuit. You just need to turn on this pedal once and you will hear how it just gives your clean sound that little bit of grit whenever you need it.

As a High Gain Boost

In recent years the metal guys have got their hands on tube screamers and have used them add a different dynamic to their high gain sounds. The tube screamer not only adds a bit of gain but also gives your sound more bite and attack which is what you need when you want to get into fast gated high gain rhythms.