DescriptionI have confirmed the audio output with the STAX SR-L300 headphones.I have tested the headphone jack, volume control, and input connectors. The listing includes the headphone amplifier unit and power supply only. ShippingWe always send the item with a tracking number. So please place an order without any concern on delivery. You can always track the delivery status.Shipping is only available to the address registered in eBay. If you want us to send another address, please change your address on eBay and then place an order.Shipping is available from Monday to Friday. Weekends are not available because freight (shipping) companies are closed.We do not mark merchandise values below value or mark items as “gifts” – Japan, US and International government regulations prohibit such behavior.If your address is in the remote areas defined by the freight (shipping) company, please pay the additional shipping fees with PayPal.About Importers ObligationImport duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyers responsibility. Please check with your countrys customs office to determine what these additional costs will be prior to bidding or buying. Thank you for your understanding.