30v power supply for sale, brand-new and used.

DIY Transistor Stereo Power Amplifier 300W 2N3055 MJ2955 Complete Component Kit with PCB Free Power Supply PCB, Components and Mica insulator Kit. Professionally Designed PCB for the Best Quality Output and Stability. Designed to Minimize the Noise and for Maximum Power output.

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A used digital power supply. Works perfectly. Up to 30V DC digitally variable in smooth steps.

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