I've installed an Artec preamp into my Cort bass, a 2 band eq one. Very good value for money if budget is tight, but you can tell it is cheaply made. The pots feel weak and less smooth than the ones that I took out of the Cort. Also, the volume control is less than fluid i,e: off/on! Installation was easy though. It is useful, in-as-much-as it helps shape more useful tones out of the bass, but the build quality isn't great, and to be honest I would of been better putting that money towards something else like an Audere etc. Which I am now doing!