1. Introduction
The LEKATO MS-20 Wireless In-Ear Monitor System provides stable, interference-free audio transmission for clear monitoring in various professional audio environments. Designed for studios, live performances, singers, and bands, this 2.4GHz IEM system offers a reliable and portable solution for in-ear monitoring. It features a long battery life, OTG support, and the ability to connect one transmitter to multiple receivers, ensuring crystal-clear sound and freedom of movement.
2. Package Contents
Please check the package carefully to ensure all items are present and in good condition:
- 1 x Wireless Transmitter (TX)
- 2 x Wireless Receivers (RX)
- 1 x Charging Case
- 1 x User Manual
- 1 x Data Cable (length 30cm/11.81in)
- 1 x OTG Cable
- 1 x Type-C Charging Cable
- 1 x 3.5mm TRS Audio Cable
- 1 x 3.5mm to 6.35mm Adapter
3. Product Overview
Familiarize yourself with the components and controls of the Transmitter and Receiver units.
Transmitter (TX)
- 1. Power Button: Long press (3s) to power on/off. Short press to switch Mono/Stereo mode.
- 2. Pairing Indicator: Shows pairing status.
- 3. Charging Indicator: Shows charging status.
- 4. Mono Indicator: Lights up when in Mono mode.
- 5. Stereo Indicator: Lights up when in Stereo mode.
- 6. 3.5mm Aux Cable Hole: For musical source input.
- 7. OTG Port: Connects to mobile phone/iPad via OTG cable.
- 8. Volume + Button: Increases volume.
- 9. Volume - Button: Decreases volume.
Receiver (RX)
- 1. Power Button: Long press (3s) to power on/off. Short press to switch Mono/Stereo mode.
- 2. Pairing Indicator: Shows pairing status.
- 3. Charging Indicator: Shows charging status.
- 4. Mono Indicator: Lights up when in Mono mode.
- 5. Stereo Indicator: Lights up when in Stereo mode.
- 6. 3.5mm Earphone Jack: Connect your earphones.
- 7. Type-C Earphone/Charging Port: For Type-C earphones or charging.
- 8. Volume + Button: Increases volume.
- 9. Volume - Button: Decreases volume.
4. Setup Instructions
4.1. Charging the System
Before first use, fully charge the transmitter, receivers, and the charging case.
- Place the transmitter and receivers into the charging case.
- Connect the Type-C charging cable to the charging case and a 5V 2A power adapter (not included).
- The charging indicators on the units and the digital display on the case will show charging progress.
- A full charge takes approximately 3 hours for the units. The charging case can provide up to 2 full charges for 1 TX + 2 RX units, offering a total usage time of up to 30 hours.
4.2. Initial Pairing
The units are designed for auto-pairing. Follow these steps for initial setup:
- Turn on the Transmitter: Press and hold the power button on the transmitter for 3 seconds.
- Turn on the Receiver: Press and hold the power button on the receiver for 3 seconds.
- Initiate Pairing: Press the power button of the receiver 3 times quickly to enter pairing mode.
- Auto-Pairing: A green light on both units indicates successful pairing. The system will auto-pair for subsequent uses.
4.3. Connecting to an Audio Source (Transmitter)
- Using 3.5mm Aux: Connect the 3.5mm TRS Audio Cable from your audio source (e.g., mixer, sound card, guitar amp) to the 3.5mm Aux Cable Hole (6) on the transmitter. Use the 3.5mm to 6.35mm adapter if your source requires a 6.35mm jack.
- Using OTG USB Input: For smartphones or USB-C devices, connect the OTG Cable from your device to the OTG Port (7) on the transmitter. This allows direct plug-and-play audio input.
4.4. Connecting Headphones (Receiver)
- Plug your 3.5mm earphones into the 3.5mm Earphone Jack (6) on the receiver.
- Alternatively, if you have Type-C earphones, plug them into the Type-C Earphone/Charging Port (7) on the receiver.
5. Operating Instructions
5.1. Power On/Off
To power on or off both the transmitter and receiver units, press and hold their respective power buttons for 3 seconds.
5.2. Mono/Stereo Mode Switching
The MS-20 supports both Mono and Stereo audio modes. To switch between modes, short press the power button on either the transmitter or receiver. The corresponding Mono or Stereo indicator light will illuminate.
5.3. Volume Adjustment
Use the Volume + (8) and Volume - (9) buttons on both the transmitter and receiver units to adjust the audio output level to your preference.
5.4. Multi-Receiver Setup (One TX to Many RX)
The LEKATO MS-20 system supports one transmitter sending signals to multiple receivers simultaneously, up to 10 pairs of devices. To add more receivers:
- Ensure the additional receivers are charged and powered on.
- Follow the pairing steps (Section 4.2) for each new receiver with the existing transmitter. Once paired, they will automatically connect for future use.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the units. Do not use liquid cleaners or aerosols.
- Storage: Store the system in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the units frequently. Charge them regularly, even if not in use for extended periods.
- Avoid Impact: Protect the units from drops and impacts, which can damage internal components.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from receiver | Unit not powered on Not paired Low battery Volume too low Earphones not connected or faulty Audio source not connected or playing | Ensure units are powered on Perform pairing steps (Section 4.2) Charge units and charging case Increase volume on receiver Check earphone connection and test with another pair Verify audio source connection and playback |
| Interference or poor sound quality | Too far from transmitter Obstructions between units Other 2.4GHz devices nearby Low battery | Reduce distance between TX and RX (max 150ft/45m) Ensure clear line of sight Move away from other wireless devices Charge units |
| Units not charging | Charging cable or adapter faulty Units not properly seated in case | Try a different Type-C cable and 5V 2A adapter Ensure units are correctly placed in the charging slots |
| Cannot switch Mono/Stereo | Incorrect button press | Ensure you are short pressing the power button, not long pressing. |
8. Specifications
| Feature | Specification |
|---|---|
| Brand | LEKATO |
| Model | MS-20 |
| Color | Black |
| Wireless Frequency | 2.4GHz |
| Frequency Range | 20-20000 Hz |
| Audio Quality | 24bit/48K HD Audio |
| Signal-to-Noise Ratio (SNR) | 100 dB |
| Transmission Range | Up to 150 feet (45 meters) in open area |
| Battery Capacity (Charging Case) | 2000mAh (3.7V) |
| Charging Time (Units) | Approx. 3 hours |
| Usage Time (with charging case) | Up to 30 hours (for 1 TX + 2 RX) |
| Input/Output Ports | 3.5mm Aux (TX), OTG USB (TX), 3.5mm Earphone (RX), Type-C Earphone/Charging (RX) |
| Material | Composite Materials |
| Batteries Included | No (referring to external batteries, internal rechargeable batteries are included) |
| Origin | Mainland China |
9. User Tips
- Understanding Product Options: When purchasing, you might see options like 'Wireless Transmitter', 'Wireless Receiver', or 'Transmitter Receiver'. 'Wireless Transmitter' refers to a single TX unit, 'Wireless Receiver' to a single RX unit, and 'Transmitter Receiver' typically refers to a complete set (e.g., 1 TX + 2 RX). Choose the option that best suits your needs.
- Portability for Gigs: The compact size and clip-on design make these monitors highly portable and convenient for musicians who perform frequently.
- Silent Practice/Recording: Utilize the system in your recording studio or for instrument practice without external speakers. This allows you to monitor your audio clearly without disturbing others.
- Optimal Charging: Always use a 5V 2A charging head for optimal and safe charging of the system.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact the manufacturer or your point of purchase. Keep your purchase receipt as proof of purchase.
