Have total control over shaping your tone with the Empress ParaEQ with Boost. This impressively transparent parametric EQ allows for precision shaping of your high, mid, and low frequencies as well as +/- 15dB for each frequency range to make subtle adjustments or huge changes to your tone. The Empress ParaEQ even has up to 30dB of clean boost and will take 9v, 12v, or 18v power sources for super versatile tone adjustment.