I want to know which attenuators I should buy for emergencies. When I get a board feed and Im running late (or forget a phillips head) I can't open my V3 and change the jumper settings. I just want to carry a pair just in case situations like this arise. I am familiar with the XLR Hosa, Audio Technica and Shure, they are all adjustable and look like what I need. Any suggestiong are greatly appreciated.