Kit k4102

I am using kit k4102 successfully with my guitar and a pair of Bose Companion 2 speakers. I would like to also use another K4102 to use with a dynamic microphone, but when I do so, the output is weak. It does amplify the microphone but it requires maxing the volume control on the preamp. Is there a way to modify the kit to boost the output? Or is there another kit that would work better. Keep in mind I am novice.

Thank you.

Hi

Maybe use a K1803 to amplify your microphone signal and then connect it to the K4102