MI AUDIO  BLUE BOY DELUXE The ultimate in low/mid gain sounds. Less compression than the standard design A total of 6 external controls, for the ultimate flexibility: Gain control High/Low balancing control tone control Volume Control with output up to 25Vpp with correct power supply! New dedicated midrange control New external character control for adding 'momentum' to guitar notes, or keeping things tight New external brightness control for controlling top end content, and to help match the Blue Boy Deluxe to different amps. Clear Lens Yellow/Amber LED Professionally powder-coated and silk-screened enclosure, measuring only 4.3" * 2.