The OD-808 Overdrive guitar pedal effect from Maxon. Originally issued in 1979, the OD808 is a pioneer in tube amp simulators. Its soft and creamy crunch was the leader to a long list of imitators. The OD808 is still the most used and copied conception today, because of its unique tone. It provides the same smooth natural overdrive as a tube amp, without altering the original tone of your guitar.