Folanda Headphone Amplifier, Portable HiFi Amp, Metal Stereo Audio Two-Stage Gain Switch, 3.5mm Output for MP3/MP4/Smart Phone/Computer/Tablet, Impedance 16-300Ω

[Superior Audio Clarity] Headphone amplifier delivers crystal clear sound with SNR ≥116dB and distortion as low as 0.001% ensuring vivid stereo performance across all music genres while supporting 16 300Ω impedance headphones for noise free listening on any device [Flexible Gain Control] Portable headphone amp features adjustable two stage gain switch that optimizes signal input for both low sensitivity and high impedance headphones providing precise audio enhancement without distortion during extended use sessions [Extended Portability] Stereo amplifier includes built in rechargeable lithium battery offering 5 8 hours continuous use with compact aluminum alloy casing that reduces signal interference and withstands daily wear for travel or home environments [Universal Device Compatibility] Headphone amplifier works seamlessly with MP3 MP4 smartphones computers tablets and CD players through standard 3.5mm AUX input output ensuring effortless connection without adapters to your existing media ecosystem [Durable Ergonomic Design] Metal headphone amplifier incorporates intuitive volume control knob and robust aluminum construction for comfortable handling while maintaining signal purity and heat resistance during prolonged listening sessions