Kithouse B6 Guitar Headphone Amp Mini Plug Guitar Amplifier Bluetooth Receiver Support Clean,Chorus,Flanger,Metal,Wah 5 Guitar Effects. Suitable for Electric Guitar, Bass, Electric Acoustic Guitar and other musical instruments with pickup.Please note:it is a bluetooth receiver, not transmitter! Best 1/4"(6.35mm)Input, 1/8"(3.5mm)Output Designed for headphones or speakers. Guitar Output volume also can be adjusted by Vol switch. Built-in rechargeable battery, working time more 8 hours. No more being asked to turn it down! Connect your headphones, close your eyes and just be a rock god! Guitar Headphone Amp with Bluetooth receiver function to play background music, Bluetooth range 16 - 33 feet(Open air). ?Notice: B6 can?t search Bluetooth Device, so it can?t be used to connect with other Bluetooth Devices; We only can use phone/Pad to search and connect B6?s Bluetooth to play background music. B6 can transfer both guitar voice music signal to guitar headphone or speaker.