HI-FI power preamp tube amplifier allows for DIY customization and flexibility in audio setups. This product has a large dynamic range and good linearity. Built-in current protection ensures safe and reliable operation of the amplifier board. You can use it with confidence. With help of the preamp tube amplifier, it can improve the sound quality, remove the harsh digital taste in the sound source and make the music sound quality more soft and clear. Perfect for audio enthusiasts looking to upgrade their audio experience with a powerful and versatile amplifier board. Our preamp tube amplifier is the perfect DIY solution to enhance your audio experience. Using it as a gift is also an ideal choice. Item Name: Audio Preamp Board Material: ABS Features: Wide Compatible, Adjustable, Lightweight Power Supply: DC 12-16V Current: 1A Size Details: L: 11cm/4.33", W: 7.5cm/2.95", H: 3.5cm/1.38" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Audio Preamp Board