In normal phase HPLC, the mobile phase is relatively non-polar and the. stationary phase is relatively polar. Other more general types of HPLC include partition, adsorption, ion-exchange, size-exclusion, and thin-layer chromatography.
This particular guitar loop pedal is the Boss RC-30. Simply put, a loop pedal is a device used to capture sound clips which are then played over and over again (looped) and often overdubbed. While loop machines have been around for quite a while, the idea of a guitar loop pedal is relatively recent. Instead of the traditional box controlled by the hands of a DJ, loop pedals allow guitarists to control the looping and overdub features via foot switches.
Electric guitars could come with a built in device that turns the sound into an electrical signal before it gets to the amp, or even the amp might come with that device to attach to the guitar. In any case, it seems to me that the guitar should come first. And if you already have the guitar, you should know what kind of cable you need. Ok, Eric solved the problem. Go down to Radio Shack and buy yourself a piece of coaxial cable and two 1/4 inch phone plugs and solder the coax to the plugs.