I want to purchase a DBX 286A, and it has a mic input (with a preamp) and a line input. Can I use the line input tu plug in an e-guitar? It says the line is 30k-60k Ohm impedance. This is high impedance (high-Z), right? 'Cos I know that the e-guitar is high impedance, so it should fit... Am I taking this the wrong way or something?