xDuoo Balanced Tube Headphones Amplifier Tube Hifi Preamp Balanced Class A Hybrid Desktop Mini Amplifier Tube Amplifier MT-604 6J14 XLR/4.4MM

------------------------------------------------------------------------------------------------------------------ 【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. ------------------------------------------------------------------------------------------------------------------ About vacuum tube + transistor hybrid amplifier: Front tube amplifier and rear transistor combine the advantages of two amplifier circuits to achieve ideal sound effects, allowing you to immerse yourself in the fun atmosphere of music. Vacuum tube: The preamp uses 4 6J1 vacuum tubes to make your voice sweet and exquisite. Class A amplifier transistor: Adopts a class A buffer transistor, output is up to 2000mW, and can easily drive many types of headphones. XLR and 4.4mm balanced input/output: Equipped with XLR and 4.4mm balanced input, 4-pin XLR and 4.4mm balanced output, rich and diverse interfaces, suitable for different kinds of balanced headphones. Built-in mute circuit: Built-in relay for mute circuit when the amplifier is turned on, avoid POP noise and ensure the tube works at its best. specification: Power supply: DC12V/2A Gain: +15dB Output power: 2000mw (1KHz, 32Ω load) Size: 17*10*6cm Dynamic range: 85dBA (32Ω) Weight: 0.55kg Frequency response: 10Hz~60KHz (±0.5dB) S/N: 115dB Suitable headphone impedance: 16Ω to 600Ω THD+N: ≤0.01% (1KHz, 32Ω load)