ONBOARD EFFECTS In addition to their fantastic uncolored sound, many Fender amps come equipped with onboard effects that convey a versatile wealth of tonal coloring, atmospherics and textures. Includes reverb, delay, chorus, tremolo and much more. AMP MODELING This amplifier features digital amplifier modeling encompassing a variety of amp types old and new, U.S. and U.K., and more. From classic Fender amp sounds to modern designs voiced for specific styles (i.e., metal), its just like having several amps in one. HEADPHONE JACK For convenient personal listening at any time that wont bring the house down on anyone else within earshot, this amp features a headphone output jack.