Cool, yes what a great mic. I'm pretty sure one day I'm going to get a pair of these. I did own a set of C414-XLS and they were my first higher-grade mics, later I needed money and sold them and severely regretted it. But now I don't actually like them that much any more... instead of those now I'd probably buy OC818's. That's interesting that they were being used to close-mic a guitar amp on a festival stage, generally I've had a hard time getting good guitar sounds with condensers in that application but I haven't tried them with LDC's on stage. But then there's not really any problem with using a well-chosen dynamic for that either, the e906 does alright. One guy had a bit of a dull tone so I tried the top boost setting on the e906, I expected it to be too shrill but then it was gentle enough to be just right. Now I've ordered a 441 I bet that'd be great on a guitar amp too, but I have other options so I'd probably save that for when I get a really great guitarist... I don't want my best dynamic getting battered to bits doing cheap local gigs.