Abstract: Disclosed herein is a power supply device for supplying power to a pickup device for a guitar. The pickup device includes a battery casing detachably provided with a battery for supplying power to a pickup unit and a TRS connector configured such that signal lines are connected thereto. The power supply line of the battery is connected in parallel to two of the signal lines between the battery casing and the TRS connector. The power supply device includes a pickup connector connected to the TRS connector, an external device connector connected to an external device, and a step-down transformer configured to step down commercial power and supply the stepped-down power to the pickup device via the TRS connector.

Abstract: Disclosed herein is a power supply device for supplying power to a pickup device for a guitar. The pickup device includes a battery casing detachably provided with a battery for supplying power to a pickup unit and a TRS connector configured such that signal lines are connected thereto. The power supply line of the battery is connected in parallel to two of the signal lines between the battery casing and the TRS connector. The power supply device includes a pickup connector connected to the TRS connector, an external device connector connected to an external device, and a step-down transformer configured to step down commercial power and supply the stepped-down power to the pickup device via the TRS connector.