eSynic Professional Headphone Amplifier Portable Headphone Volume Amplifier Rechargeble Headphone Amps Digital HiFi Amp With 3.5mm Jack & a Two-stage Gain Switch for MP3 MP4 Phones and Computers etc Style-A electronics_update_2023 4cm) Material:plastic

4cm) Material:plastic

Elegant AppearanceThe side of the speaker isolation pad with 2 thin grooves could effectively improve the visual effect of your machine and absorb vibration

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adding even more area to trap water

eSynic Professional Headphone Amplifier Portable Headphone Volume Amplifier Rechargeble Headphone Amps Digital HiFi Amp With 3.5mm Jack & a Two-stage Gain Switch for MP3 MP4 Phones and Computers etc Style-A electronics_update_2023 4cm) Material:plasticeSynic Professional Headphone Amplifier Portable Headphone Volume Amplifier Rechargeble Headphone Amps Digital HiFi Amp With 3. 5mm Jack & a Two stage Gain Switch for MP3 MP4 Phones and Computers etc Product Features *eSynic Professional Headphone Amplifiers* : Our eSynic Mini HiFi Headphone Amplifier is with Impedance of up to 16 300, to Help Players with Low Thrust to Drive Headphones Better and Help Headphones with High Impedance or Low Sensitivity