AIYIMA H1 Mini Portable Headphone Amplifier JRC5532 OP Amp AUX Headphone Amplifier for MP3 Player Tablet Phone Hi-Fi 3.5mm

1. Operational amplifier chip: JRC5532*2, replaceable operational amplifier chip: OPA2604, OPA2134, LM4562, NE5532, etc. 2.Frequency characteristics: 20-20Khz (±0.1db), maximum output: 170mW/32Ω load. 3. Input mode: AUX, AUX. Output mode: earphone, headphone, active speaker. 4. Compatible devices: mobile phones, tablets, computers, MP3, TVs, etc. 5.Battery type: Polymer, battery capacity: 3000mah. Maximum volume working time: 12 hours.