Joyo Rated Boost Clean Booster JF-301 New Ironman Mini Series The new Rated Boost is powerful little Boost that absolutely make your riffs and melodic strings stand up to attention. These little minis are housed in a very solid metal casing with a features an ingenious housing enclosure over the knobs that protects your tone settings from accidental movement and also protects from dust, spills etc. Well built little units with a great tonal response These are part of the smaller effect revolution and can pack a lot of punch in a very small space Features Volume, Drive, High and Low ( EQ).