Features: High quality sound effect: The HIFI front tone board of this fever adopts high-quality audio chips and circuit design, which can provide clearand delicate sound quality, allowing users to enjoy a more realistic andshocking music experience. Accurate tone adjustment: The tone board has precise tone adjustment function, allowing users to make subtle tone adjustments according to theirpreferences and audio content, achieving personalized sound effects.Advanced technology: The tone board adopts advanced digital signal processing technology, which can process audio signals quickly and accurately, ensuring sound quality without distortion and restoring original flavor of the sound source. Music enthusiasts: For music enthusiasts whopursue high-quality sound effects, this HIFI front tone board is a necessary device that canenhance the audio experience and restore music details. Audiophile: For users who like DIYaudio system or upgraded the existingaudio system, the tone board can provide them with more sound effect adjustment optionsto meet their personalized needs. Homeaudio system: Suitable for home audio systems, users can connect the sound paletteto devices such as amplifiers and CDplayers to achieve fine adjustment of music andenhance home music enjoyment. Specifications: Item: PRO1 HIFI Preamp Tone Board Size:approx 12x4.5x1.5cm/4.72x1.77x0.59in Input voltage: 12-30V, cannot input AC power Working current: 28mA Audio input interface: XH2.54-3P Chip: JRC2068D Package Includes: 1PC PRO1 HIFI Preamp Tone Board note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!