Mini recorder | Projects › Projects › Mini recorder This topic has 1 reply, 2 voices, and was last updated 4 years, 5 months ago by Siddhartha A. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts August 9, 2018 at 1:46 pm #4958 ashokParticipant I ordered the material to build a micro voice recorder with playback. After soldering a few wires it works fine except the volume is very low. What steps would I take or what would I need to make the volume louder? Thanks Dan December 19, 2018 at 8:34 am #14954 Siddhartha AParticipant can try a pre-amplifier circuit like the one here – engineersgarage.com/contribution/designing-pre-amplifier-using-lm358-99 Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In