WINGONEER Vacuum Tube Amplifier Mini Stereo HiFi Headphone Audio Amplifier DIY Built-in

---------------------------------------------------------------------- 【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction. 【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary. 【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product. 【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. ----------------------------------------------------------------------

Low ground noise: Adopts a microprocessor to control the relay as an output switch, and the setting of a low-noise power circuit inside the machine prevents ON/OFF noise. Using aluminum CNC as the cover of the machine, it is of high quality with scratch resistant design. Large drive current: Specially designed output produces larger drive current. Tube Semi-Set Design: The tube is set in half of the machine to keep hot parts inside the goods and prevent customers from getting burnt. Can replace tube models such as E180F, 6ж9П, EF861,6688, etc.Easily press headphones such as HD650/HD580/HD600/K701/K702/Q701. Notice: Please turn on the amplifier for about 15 seconds before connecting the audio source and connecting the headset. Low-resistance, high-sensitivity armature earphones or headphones are not suitable, but we recommend using 24-600Ω headphones. Due to the microphone effect, please keep the amplifier stable during use. If you have noise issues, move it away from routers, cell phones, and other devices that may interfere with the audio signal. If there is no interference, try removing all inputs and check if the noise is still present. If so, your device may be defective and you can contact us for support. Specifications: Output power: ≥1100mW (32ohm) Headphone adapter impedance: 18-600ohm Total harmonic distortion: