I need to amplify a heart beat signal using a piezo disk microphone. I’d like to ask you if k4102 kit could be the best choice.
Thank you for your help.
No, this is a guitar amplifier. The response curve is totally different.
You need an amp with very good low-freq. performance.
What is the output level of your mic?
What level do you need at the output of the amp?
I don’t know the output level of the mic.
I’m thinking of the impedence of the piezo disk mic. Because of it’s high, I’d need a high impedence on preamp input. For a 35000 pF capacitance (100Hz) of the mic, I’d need 46Kohms input impedence and higher. I’d need a 200/300ohms output that lets me match the mic input preamp of the mixer.