AirSync IEM Professional Wireless In Ear Monitors
Regular price
$199.99
Sale price$149.99
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Hear yourself clearly on any stage with professional UHF wireless in-ear monitoring. No dropouts, no interference, no $800 price tag.
- UHF technology (657-663 MHz) for stable, interference-free monitoring across up to 13 systems simultaneously
- Crystal-clear audio with less than 3ms latency and a full 20Hz-20kHz frequency range
- Rechargeable battery that lasts 4-6 hours with USB-C charging
Free USA Shipping
60 Day Money-Back Guarantee
1 Year Warranty
Ditch the floor wedges and cut the cord. AirSync IEM delivers professional UHF wireless monitoring at a price working musicians can actually afford. With plug-and-play setup, 150-foot range, and zero WiFi interference, you'll experience the freedom to move, perform, and connect with your audience — every night, every venue.
- Professional UHF Frequency (657-663 MHz): Operates in a dedicated band that doesn't compete with WiFi, Bluetooth, or wireless instruments — no dropouts when your venue fills up
- 150-Foot Working Range: Cover larger stages with room to spare — 67% more range than compact 2.4GHz systems
- Under 3ms Latency: Imperceptible delay — sounds and feels like you're plugged in direct
- 13 Available Channels: Run up to 13 simultaneous systems for full band monitoring, or pair multiple receivers to a single transmitter for shared mixes
- Visual AF Meters: Integrated on both transmitter and receiver for optimal gain staging — avoid clipping and dial in clean levels at a glance
- Factory-Paired Plug & Play: Power on both units and they sync automatically — no frequency coordination needed for single-system use
- Independent Volume Control: Receiver volume knob preserves your preferred level between power cycles
- Integrated Belt Clip: Secure receiver attachment built in — no accessories to buy or lose
- Hardshell Carrying Case Included: Professional protection for transport — not a cheap soft bag
- FCC Certified: Meets all federal requirements for UHF wireless transmission
- Wireless transmitter (XLR female input)
- Wireless receiver with integrated belt clip (3.5mm output)
- USB-C charging cable
- XLR male to 1/4" TS adapter
- Hardshell carrying case
- Quick start guide
Note: Works with any standard 3.5mm earphones or IEMs (not included)
📖 Table of Contents
- Quick Start Guide
- What's Included
- Controls and Features
- Locking/Unlocking Frequencies
- Charging
- Built-in Limiter
- Specifications
- FAQ
✅ Quick Start Guide
- Power on: Press and hold the power button for 2 seconds on both transmitter and receiver. Units will auto-sync and display solid wireless signal bars.
- Connect transmitter: Plug the transmitter into your audio source (mixing console, headphone amp, etc). Use included XLR→¼” adapter if needed.
- Connect receiver: Plug earphones into receiver’s 3.5mm output.
- Adjust wireless frequency (if needed): Double-click transmitter power button to cycle through frequencies. The receiver follows automatically if unlocked.
- Adjust audio source output: Set source output until transmitter AF meter shows ~75% without clipping.
- Adjust receiver volume: Use receiver volume knob. Start low and increase gradually.
- Units are factory-paired. Frequency locking is only required when using multiple systems.
📦 What's Included
- Wireless transmitter
- Wireless receiver with belt clip
- USB-C charging cable
- XLR male to ¼" TS adapter
- Hardshell carrying case
🎛️ Controls and Features
Transmitter
- XLR Input: Connect line-level audio source (mixer send, aux output, etc.)
- Power Button: Hold 2s to power on/off; double-click to change frequency
- LCD Display: Shows frequency, battery, AF meter, signal strength
- USB-C Port: Charges 950mAh battery (5V/1A)
Receiver
- 3.5mm Output: Connect any standard earphones or IEMs
- Volume Knob: Clockwise to increase, counterclockwise to decrease
- Power Button: Hold 2s to power on/off; press three times to engage or disengage the built-in limiter
- LCD Display: Shows frequency, battery, AF meter, signal strength
- Belt Clip: Integrated for secure attachment
- USB-C Port: Charges 950mAh battery (5V/1A)
🔒 Locking/Unlocking Frequencies
How Automatic Frequency Matching Works
By default, AirSync IEM receivers automatically sync to the nearest transmitter when powered on. This allows simple plug-and-play operation for single-system use.
When to Use Frequency Locking
- Using multiple AirSync IEM systems simultaneously
- Performing near other AirSync users
- Ensuring receivers only connect to specific transmitters
Once locked, receivers will only connect to their paired transmitter.
System Capabilities: Up to 13 transmitters on different channels. Multiple receivers can lock to one transmitter.
Lock Process
- Setup: Turn off all other AirSync devices before starting.
- Step 1: Hold transmitter power until screen blanks and flashes, then press once. Display shows “LOCK”.
- Step 2: Within 10 seconds, hold receiver power until screen shows “LOCK”. Repeat for each receiver.
- Step 3: While all screens flash “LOCK”, press transmitter power once to confirm.
- Success: All units return to normal and display same channel.
Unlock Process
- Step 1: Hold transmitter power until display flashes, then press twice. Display shows “UNLOCK”.
- Step 2: Within 10 seconds, hold receiver power until “UNLOCK” appears. Repeat for each receiver.
- Step 3: While flashing, press transmitter once to confirm unlock.
- Success: Receivers now auto-sync to any available transmitter.
📌 Quick Reference
Lock when using multiple systems to keep each receiver tied to its transmitter. Unlock to allow auto-sync to any transmitter.
| Action | Transmitter Button Press | Result |
|---|---|---|
| Lock | Hold → Press ONCE → Sync receivers → Press once to confirm | Dedicated pairing |
| Unlock | Hold → Press TWICE → Sync receivers → Press once to confirm | Auto-sync enabled |
Common Locking Mistakes
- ❌ Don’t power receivers before transmitter shows “LOCK/UNLOCK”
✅ Wait for flashing before syncing receivers - ❌ Don’t delay between receivers (10s timeout)
✅ Work quickly through all receivers - ❌ Don’t forget the final transmitter press
✅ Always confirm to complete process
🔋 Charging
- Battery: 3.7V 950mAh Li-ion
- Battery Life: 5–6 hours (varies by use)
- Charge Time: 2–3 hours via USB-C (5V/1A)
- Low Battery Warning: Appears with ~1 hour remaining
- Both units can charge simultaneously and operate while charging.
🛡️ Built-in Limiter
The built-in limiter helps protect your hearing by reducing sudden volume spikes and overly saturated signal peaks before they reach your earphones.
- Engage limiter: Press the receiver power button three times
- Disengage limiter: Press the receiver power button three times again
Use the limiter when you want extra protection from unexpected loud transients or hot monitor mixes.
⚙️ Specifications
| Specification | Value |
|---|---|
| Frequency Band | 657–663 MHz |
| Channels | 13 |
| Latency | <3 ms |
| Frequency Response | 20Hz–20kHz |
| Working Range | Up to 150 ft |
| Battery Life | 5–6 hours |
| Transmitter Power | 3–8 mW |
| SNR | >95 dB |
| Transmitter Input | XLR female (line level) |
| Receiver Output | 3.5mm TRS stereo |
| Simultaneous Systems | Up to 13 transmitters |
| Receivers per Transmitter | Multiple |
Frequently Asked Questions
Do I need to pair the units?
No. AirSync IEM units are factory-paired. Locking is only required when using multiple systems at once.
How many systems can operate simultaneously?
Up to 13 transmitters on separate channels. Multiple receivers can sync to one transmitter.
Why am I getting audio dropouts?
Distance over 150ft, obstacles, interference, or low battery can cause dropouts. Move closer, ensure line-of-sight, or change frequency.
Audio sounds distorted. What should I do?
Lower your mixer's send level or receiver volume. AF meter should not constantly peak.
Can I use any earphones?
Yes, any standard 3.5mm earphones, headphones, or IEMs will work.
Can I connect a microphone directly?
No. The transmitter accepts line-level input only. Connect mic to a mixer first, then send monitor mix to AirSync IEM.
How do I know when to charge?
Battery icon on display shows remaining charge. Low battery warning appears with ~1 hour left.
What's the latency?
Less than 3ms—effectively imperceptible for live use.
Can I use it while charging?
Yes, both units are fully operational while charging (though not ideal for stage performance).
How do I enable or disable the built-in limiter?
Press the receiver power button three times to engage the limiter. Press it three times again to disengage it.
Safety & Support
• Remove earphones before powering on/off
• Start with low volume
• Avoid moisture or heat
Support: codamusictech.com/support
• Start with low volume
• Avoid moisture or heat
Support: codamusictech.com/support
Shipping
- Free standard shipping on all US orders
- Orders placed before 2 PM PST ship same day
- Most US customers receive their order within 2-3 business days
- Tracking provided within 24 hours of shipment
Returns & Guarantee
- 60-day money-back guarantee - no questions asked
- Try it at rehearsals, gigs, and different venues
- If it doesn't outperform your current monitoring setup, send it back for a full refund