Multiple Hardware Configurations for Seamless Device Switching
You can now eliminate compatibility headaches when switching between Android smartphones, iPhones, and camera systems. The A21 Wireless Microphone variants provide versatile receiver options designed to match your specific recording setup instantly. Because you can select single-receiver or dual-channel transmitter setups across USB-C and iOS Lightning connections, capturing crisp dialog on any mobile device becomes completely effortless. Consequently, upgrading your smartphone camera setup into a complete wireless broadcast rig becomes second nature. If you need a compact single-channel clip-on microphone option for quick mobile vlogging instead, explore our WM-10 Type C / iPhone Wireless Mic.
Dual-Channel 2.4GHz Transmission for Crystal-Clear Dialog
Do not let overlapping audio frequencies or dropped signals compromise your video productions. This dual-channel wireless microphone system incorporates advanced 2.4GHz digital transmission engineered for total vocal fidelity:
Simultaneous Two-Person Recording: First, clip two independent transmitters onto different presenters for balanced dual-host interviews.
Smart Noise Reduction: Next, activate the internal DSP chip to filter out background traffic, chatter, and wind rumble.
Real-Time Audio Monitoring: Finally, connect earphones to monitor live sound levels directly without latency delays.
Integrated Storage Charging Case Built for Travel Creators
You will no longer worry about running out of battery power during full-day video shoots. Housed in a magnetic fast-charging storage case, the A21 Wireless Microphone variants automatically pair and charge the moment you store them inside. Furthermore, the ultralight clip-on transmitters attach securely to shirt collars, lapels, and ties without dragging down fabric during long broadcast sessions. For creators who require a quick-release tripod head to mount their phone rig or camera setup, check out our U100 Ballhead.
Professional Wireless Audio Support for Studio & Outdoor Shoots
Do not limit your creative vision to short distances or quiet rooms. The extended line-of-sight wireless transmission range allows your subjects to walk, present, and move freely across open spaces without audio dropouts. Therefore, you can produce dynamic fitness tutorials, street interviews, and travel vlogs with total creative freedom. For converting thread mounting sizes or pairing double-male conversion hardware across your camera cage, combine your gear with our Ulanzi SK-23 Screw Adapter Set.
Product Specifications Table
| Feature | Technical Specification Details |
| Product Model / SKU | A21 (A21 Wireless Microphone variants) |
| Available Variants | Single / Dual Transmitters with Type-C & iOS Lightning Receivers |
| Wireless Frequency | 2.4GHz Digital Frequency Hopping Technology |
| Pickup Pattern | 360-Degree Omnidirectional Condenser Capsule |
| Audio Processing | DSP Smart Active Noise Cancellation Chip |
| Power System | Portable Magnetic Charging Case with Digital Battery Indicator |
| Latency Rate | Ultra-Low Latency Transmission for Real-Time Sync |
| Operating Range | Up to 50m / 164ft Line-of-Sight Signal Distance |
| Design Profile | Compact Clip-On Dual Wireless Lavalier Microphone System |












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