Experience high-fidelity audio on the go with our Portable Headphone Amplifier, ideal for impedance ranges of 16-600Ω. Adjust bass intensity with precision using the bass knob for a richer music experience. Featuring a 3.5mm Aux In and Out, enjoy clearer stereo sound without distortion, thanks to SNR>100db and THD+N=0.0003%. Crafted with a sturdy aluminum case to reduce signal interference and increase heat resistance, our amplifier ensures durability and optimal performance. With a rechargeable 1,350mAh lithium-ion battery providing 8 to 10 hours of runtime, and wide compatibility with devices like phones, iPads, and MP3 players, elevate your audio experience anywhere, anytime. Please note, avoid using while charging to prevent potential power interference.