Incredible sound starts here. The Radial Workhorse Q4 500 Series 4-Band EQ adds warmth to vocals and detail to your instruments. Sculpt your tone with precision thanks to a semi-parametric equaliser. Thanks to a pure class-A circuit youll get outstanding musicality and signal flow every time you perform. Unparalleled audio. Onstage and in the studio. With the Q4 you have unlimited control of your low lo-mid hi-mid and high frequencies. Whether you need to cut or boost each sensitive control gives you the power to shape your sound any way you want. The ideal companion. Thanks to its seamless design the Q4 is compatible with all standard 500 series racks. Whether youre in the studio or heading out on the road youll get unfaltering performance. Every. Single. Night.