FUNCTION

When watching films, plays, attending meetings, classes, or during daily conversations, the product helps users hear sounds more clearly and loudly.

INSTRUCTION DIAGRAM

• “N” – Power ON
• “O” – Power OFF
• “H” – Noise Reduction Mode
• “0 – 7” – Volume Levels
  • “0” = Minimum Volume
  • “7” = Maximum Volume

USAGE

1. Connect the earphone and earphone wire properly to the amplifier.
2. Select an earplug that fits comfortably in your ear.
3. Turn on the device and adjust the mode and volume according to your preference before use.

BATTERY INSTALLATION

The unit operates using 1 x AA 1.5V Battery.

1. Open the battery compartment cover.
2. Insert the battery correctly according to the “+” and “−” polarity markings.
3. Ensure the battery is installed properly before closing the battery compartment cover securely.

SWITCH O–N–H

• When the switch is set to “N”, the amplifier is powered ON and begins operating.
• When the switch is set to “O”, the amplifier is powered OFF and stops operating.
• When the switch is set to “H”, the amplifier operates under Noise Reduction Mode, helping reduce high-frequency background noise for clearer sound.

SPECIFICATION

1. Maximum Sound Output: ≤ 122dB ± 5dB
2. Sound Gain:
   • Mode 1: 32dB ± 3dB
   • Mode 2: 40dB ± 3dB
3. Total Harmonic Distortion: ≤ 2%
4. Frequency Range: 300 – 4000Hz
5. Input Noise: ≤ 22dB ± 3dB
6. Voltage: DC 1.5V
7. Current: ≤ 3.5mA

MAINTENANCE

No Sound from the Amplifier

Please check the following:

1. Ensure the power is switched ON.
2. Ensure the battery is inserted in the correct direction.
3. Check whether the battery power is depleted.
4. Check whether the earphone is damaged.
5. Check whether the wire connection is broken or loose.

Sound from Amplifier is Weak or Unclear

1. Battery power may be low.
2. The earphone may be damaged or improperly connected.

CLEANING

Use a soft dry cloth with mild detergent to clean the unit body.

Do not use strong chemicals, gasoline, paint thinner, or excessive moisture during cleaning.

NOTE

1. This product should not be used by individuals suffering from ear infections, tympanitis, or ear pyogenesis.
2. Do not use the device at excessively high volume levels for prolonged periods, as it may cause hearing damage.
3. If you experience any discomfort during use, discontinue usage immediately.
4. Please maintain the product regularly and ensure the earplug and sound collection openings are kept clean and free from blockage, as obstruction may affect the sound amplification performance.
5. Avoid dropping the product.
   Do not store or use the unit in humid, wet, or high-temperature environments.
6. Do not dispose of used batteries together with normal household waste.
   Used batteries should be disposed of properly according to local regulations.
7. Remove the battery if the product will not be used for an extended period of time.
   Battery leakage may damage the internal components of the unit.
8. Do not use the product in potentially explosive or hazardous environments.
9. Keep the unit away from children.
   Improper handling may result in injury or damage to the product.