Using SM58 with BOSS Micro BR

[Bombay Gorden]

I'm using an SM58 with a BOSS Micro BR, but the volume is so low that I had to increase the input level to a point where now I'm running into problems with noise. Would it help to use a pre-amp, and if so, what sort of preamp would work with this setup? I'm also wondering if there's a better way to connect the mic to the recording unit. Right now I'm using an xlr to 1/8 adapter, but I'm wondering if there's a better way to set it up to decrease the noise and increase volume.

 

[mjbphotos]

The specs for the Micro BR reference a 'power' feature - I'm guessing this is for mics (like shown on the Roland site) that have a preamp built into them.