Feature: 1. TPA6120 Chip: Equipped with the TPA6120 earphone amplifier chip, renowned for delivering robust and dynamic audio performance, providing you with a powerful listening experience. 2. Bass and Treble Adjustment: With independent bass and treble control knobs, this headphone amplifier enables you to tailor the audio to your personal preferences for a more satisfying auditory journey. 3. Gain Switching: Offers one touch gain switching for easy transition between high and low gain levels, ensuring compatibility with a wide range of headphones for optimal sound quality. 4. Dual Output Jacks: Benefits from dual 3.5mm/6.35mm headphone outputs, providing versatility to connect various headphones without the need for adapters. 5. Compact Design: Enjoy a compact and elegant form factor that saves space on your desktop, while delivering a rich and immersive audio experience. Specification: Signal Input (Line-in): <5Vrms Treble Adjustment: ±6dB Bass Adjustment: ±6dB 6.35/3.5mm Output: @32Ω2.5W/@300Ω250MW Signal to noise ratio (SRN): 115dB THD: 0.001% Power Supply: DC 5V2A-12V1A Color: Black Item Size: 11.8*11.0*3.2cm/4.64*4.33*1.26in Item Weight: 635g/22.39oz. Package List: 1 * Headphone Amplifier 1 * Power Adapter 1 * User Manual