HiFi Headphone Amplifier Portable 3.5mm Stereo Earphone Audio Amplifier 200Mah Lithium Battery Mobile Phone

Description: Are you still worried about this? Every time you listen to a song on your cell phone, the sound is stiff, dry and cold. Low frequency reduction is insufficient, listening is weak, audio output has digital flavor bias. From now on, you won't be troubled by these problems any more. This sound amplifier can help you solve all the sound problems. You deserve a try. Eight Sound Improvement Functions: Reduce the power consumption; Positive and negative dual power technology; Low resistance impedance matching circuit network; High and low frequency dynamic compensation tuning circuit network; Low distortion operational amplifier; No-output capacitance, ground plane reference output design; High efficiency charge and radiation suppression circuit; Low resistance Electricity Supply design. Specifications: Type: Cell Phone Amplifier Material: Aluminium Alloy Color: Black Output Power: Maximum. 300 mw * 2/16 ¦¸ Frequency Response: 2 - 27 KHz Signal-to-noise Ratio: 95 DB Dynamic Range: 90 DB Separation: 70 DB Distortion: ¡Ü 0.006% Input Impedance: 32¦¸ Output Impedance: ¡Ü 200¦¸ Working Temperature: - 40 ¡ãC - 60 ¡ãC Storage Temperature: - 40 ¡ãC - 85 ¡ãC Storage Humidity: 10% - 90% Battery: Built-in lithium battery, 200mah (charged by Micro USB cable) Battery Life: 30 hours (approximately) Size: Approx. 68 X 25 X 10 mm / 2.7 X 1 X 0.4 inch (without wires) Battery protection: Yes Overcurrent protection: Yes Overpressure protection: Yes Short circuit protection: Yes Package Weight: 53g Package Include: 1 x HiFi Amplifier (excluding charging line)