Darkglass M500 Microtubes 500 HeadThe Microtubes 500 is a 500W amplifier equipped with an all analog solid state preamplifier and a Class D Power Module. On the top row, you will find the clean section which is the foundation of your tone. It features a Gain control and an active 4 band EQ: along with Low and Treble controls, you will find Low Mids and Hi Mids controls, each knob with their own 2 way frequency switch. On the bottom row, you will find the Microtubes Engine, an extra