This tiny SMD Hybrid stereo booster amplifier takes the output of any Walkman computer radio etc. and boosts it to full room filling volume. Uses a combination of standard lead components and SMD components to form a unique Hybrid assembly technique that is used in many industrial/commercial applications. The Stereo Amp Kit uses a special SMD audio power amplifier IC which puts out an incredible 2.3 watts RMS per channel into a 4ohm load. Use with any stereo speakers you wish.