Nobsound Nobsoud Douk Audio T4 PRO Mini 5654 Vacuum Tube Phono Preamp Home Stereo Audio Preamp Headphone Amplifier

------------------------------------------------------------------------------------------------------------------ 【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. ------------------------------------------------------------------------------------------------------------------ T4 PRO tube preamplifier meets more HiFi needs. MM phono input converts phono signal to line level signal, uses low noise integrated circuit and high quality components to ensure clear and clean sound. The 3.5mm AUX input amplifies low-level audio signals from smartphones, tablets, PCs, MP3s, etc., making it easier to drive amplifiers and active speakers, greatly improving sound quality. Imported JAN5654 Vacuum Tubes and Vintage Warm Sound: Comes with JAN5654 vacuum tubes by default, everything is improved, including detail, clarity, immediacy, richness, dynamics, tone, and much better than the 6J1 series, especially for human voice. Pluggable tube socket for tube rolling and sound shaping, making tube replacement very convenient. 3.5mm headphone output and perfect circuit design: T4 PRO also has a built-in classic headphone amplifier circuit (2*NE5532), which can easily drive 32-300Ω headphones. Affordable and advanced architecture, TI TPA5430 for power management, TL071 + JRC2068 phono preamp circuit, etc., let you enjoy HiFi analog sound and top-notch design at an unbeatable low cost.