Dynamic Mic Compressor Circuit Electronic Dynamic Mic Compressor Circuit Electronic. Supply voltage for this Dynamic Mic Compressor circuit must be 12 Volt. Highly recommended to use its own power supply, do not use a shared power supply from another electronic circuit module. Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pinterest (Opens in new window)