This circuit can change your Walkman into a stereo system with enough power to fill a large room with stereo sound. Features include temperature compensation, output short-circuit and overload protection. In addition, the circuit has low/high impedance inputs which can be connected to any stereo audio source such as a Walkman, portable CD player, MP3 player, etc.

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Supply voltage: 12 to 16V DC / 1A. Based on two TBA810 Integrated Circuits. Input sensitivity: 100mV / 47K Ohm. Output power: 2 x 7W Max. / 4 Ohm. Frequency response: 40Hz to 18KHz (-3dB). Includes volume controls. PC board dimensions: 3.45" x 2.26"