This is a 15V fixed-voltage power supply adaptor designed to meet the exact power specifications of your Korg B2S and B2SP piano. NOTE: Before purchasing, please verify that your Korg B2 is not the version requiring a 12V power supply. That model is known as the Korg B2N, and this product is not compatible with it due to incorrect voltage and connector incompatibility. If you have any questions, please before buying. Specifications: - Output voltage: 15V - Maximum output current suitable for your device - Correct output tip size and polarity thoroughly tested for compatibility - 2-pin plug compatible with Type C (EU) wall sockets - Input voltage: AC 100-240V, 50/60Hz Additional features: - Compliant with applicable safety standards - Includes overvoltage, overcurrent, and short-circuit protection to help safeguard your device - RoHS and CE certified - Meets Energy Star Level VI efficiency standards for improved energy efficiency - Backed by a 2-year warranty: if the power supply fails within 2 years of purchase, it will be replaced