Questions are always available in the message. Luxman tube amp Electricity has been confirmed, but sound output has not been confirmed. Please read POLICY before purchasing products with [AC100V] in the title or products that use a power outlet.We cannot guarantee the battery, detailed operation, or the internal condition of the product. It is a product that is premised on repair by the purchaser or uses parts. Please inform us within three days after goods arrival. If it does, please let us know within 3 days of getting the item. Always check the voltage before claiming a defect. If you do not check by voltage you will not receive a return. Attention to buyers: The voltage of this electronic device is 100V and is intended for use only in Japan. To use this device outside Japan where the voltage exceeds 100V, such as 200V-240V, To adjust the voltage in your country, you need to use a transformer. If you don't use a transformer, this device will break. We are not responsible for any damage to this device if used without a suitable transformer. Failure to check the voltage will invalidate the return. This item is in the category "Consumer Electronics\TV, Video & Home Audio\Home Audio\Receivers & Amplifiers\Amplifiers & Preamps". The seller is "monosora-japan" and is located in this country: JP. This item can be shipped worldwide.