Description Product Description Features The Nutube provides the sound and response of a tube amp in a compact size. The 9V power supply voltage is boosted to 15V to drive all analog circuits for a dynamic sound. Three connection modes are built in, which can be switched depending on the application, such as effects return, recording, and so on. The channel switch function allows multiple VALVENERGY series units to be linked together like switching channels on a guitar amp. OLED display for visual confirmation of sound changes. Specifications Connections: INPUT terminal, OUTPUT terminal, DC9V terminal, LINK terminal Controls: GAIN knob, VOLUME knob, TREBLE knob, MIDDLE knob, BASS knob, BRIGHT switch, MODE switch Power supply*: 1 x 9V alkaline battery (6F22/6LR61) or optional AC adapter Battery life: Approx. 2 hours or more (when using alkaline batteries. Battery life: Approx. 2 hours or more (with alkaline batteries, varies depending on usage conditions) Dimensions (W x D x H): 72 mm x 120 mm x 55 mm (including protrusions) Weight: 350 g (including batteries) If you want more beauty items Shipping Express shipping We can ship the item together. Please check the shop as there are various other products. go to our shop Most of the items will be delivered in 2-4 weeks after it shipped out. We will carefully deliver using the packing material. About Us -----Important----- Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer?s responsibility. Please check with your country?s customs office to determine what these additional costs will be prior to bidding or buying. Customs fees are normally charged by the shipping company or collected when you pick the item up.These fees are not additional shipping charges. We won't under-value merchandise or mark the item as a gift on customs forms.Doing that is against U.S.and international laws.