Acoustic guitar effects that let every nuance of your playing technique shine through. Professional features tailor-made for critical recording work. Patches and modules that come alive during a live performance. Using the 504II is like having your own acoustic recording engineer wherever you go.

33 versatile effects In an extremely compact body, the 504II offers a full complement of 33effects, with the ability to use up to 10 simultaneously. Exceptional quality and superior performance are now within easy reach. Effects such as LIMITER, EQUALIZER, and CHORUS have been specially optimized for acoustic guitar. AIR simulates the spatial feeling of sounds being picked up in a room by a microphone. De-AMP removes the harshness that can be a problem when playing acoustic guitar through a guitar amplifier. TOUCH helps makes your picking more uniform and smooth. Other effects include EMPHASIZER which simulates a steel guitar and the world's first WAH effect specifically designed for acoustic guitar. Explore a whole new world of sound with the 504II.