How to amplify a voice / mini device by 9 volts / Video tutorial

In this video, I show how to make a simple DIY project using everyday materials and basic tools.

Welcome to Roman Ursu HACK, a channel focused on DIY projects, how to make tutorials, and practical handmade ideas.

On this channel, you will learn how to make useful things at home, using simple tools, everyday materials, and low-cost solutions.
Each video is a step-by-step DIY tutorial, designed to be clear, repeatable, and beginner-friendly.
This channel covers:
DIY projects, how to make at home, handmade crafts, practical DIY ideas, creative problem solving, home workshop builds, low budget projects, and functional inventions.

All content is created for people who enjoy:
DIY, do it yourself projects, handmade crafts, learning by doing, creative building, and making things with their own hands.

If you are looking for easy DIY tutorials, how to make projects at home, and practical handmade ideas, this channel is for you.
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