Until recently, I only used a Shure SM-57 to amplify my acoustic guitar at gigs. Sometimes I would use an electric guitar. But I was never really satisfied with the SM-57 due to the issues that Guitaurman mentioned, namely not enough volume without feedback in a noisy venue. I have experimented with different mics, and have never found one that worked out for me in a restaurant or club.
I now use a K&K Pure Mini, but I still prefer the sound of a mic. I would really like to find a mic that will give me the volume without the feedback for bigger, noisy venues. Condensers sound great, but then there is the problem of them picking up all of the background noise. I've even tried a ribbon mic, but it was a lower-priced one that I wasn't thrilled with. I'm still searching.
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