Description

Features：

• Listen to Audio Devices with comfort and privacy
• In-Line Volume Control
• Built-in Power Amplifier to Enhance the Audio Output Level
• Switch Off Built-in Amplifier To Power Speaker Directly

Volume: Adjust To Desired Audio Output Level
Amplifier On / Off: Switch On To Increase Audio Output Level
Note: Install One AAA / UM-4 / R3 Battery (Battery not included) To Power
the Optional Internal Audio Amplifier Only Connect To Headphone Jack,
As Connection To Higher Output Speaker Connection Will Cause Damage.

Specification：

• Speaker : 57mm 16 ohm 50mW full range
• Amplifier output power: Typical 50mW 16 ohm
• Input impedance: 200 ohm
• Frequency response : 100Hz ~20kHz
• Maximum input power: 50mW (amplifier OFF)
• Input sensitivity: 500mVrms