DESC: As an added feature on the new Thunder amplifiers, MTX has also incorporated a technology called PrizmEFX to make using a Thunder amplifier a complete sensory experience. PrizmEFX lighting tantalizes the sense of sight by allowing choice of unlimited colors on the display including red, green, blue, or any color in between. Sight united with sense of touch (through convenient adjustment controls on the surface of the product) and sense of sound makes the new Thunder amplifiers completely stimulating. And if that's not enough, you can switch PrizmEFX lighting to pulsate with beat of music to heighten the experience even more.