EIA Standard 1U Receiver Host with Quad Antennas and Color Display.
Centralized Control, Uncompromised Stability
The A-04 streamlines complex audio setups by integrating four independent receiving channels into a single, robust chassis. The intuitive color display screen provides AV technicians with instant visual feedback on critical metrics: RF/audio levels, battery status, SQ distance, and channel locking.
Engineered with standard phase-locking circuits and digital pilot technology, the receiver automatically silences the AF signal the moment a transmitter is turned off, ensuring absolute zero background noise. With a built-in working mode inductor, electromagnetic interference from the power supply is drastically reduced, guaranteeing crystal-clear vocal reproduction.
Integrator Advantages
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Multi-System Stacking
4 sets of pre-configured stacked frequencies allow up to 4 systems (16 mics) to operate simultaneously. -
One-Click Operations
Independent frequency search, IR grouping, and one-click locking for rapid deployment. -
Lithium Battery Support
Optional conference bases support detachable 18650 rechargeable lithium batteries for up to 11 hours of use.
4-Channel Receiver Host Specifications
| Parameter | Details |
|---|---|
| Carrier Frequency Band | UHF 610-670MHz (Bandwidth: 300MHz) |
| Channel Groups | 4 Channels |
| Oscillation & Modulation | PLL Phase-Locked Loop (± 0.005%) | Modulation: FM (Max offset ± 50KHz) |
| Audio Performance | Response: 55Hz~16KHz (± 3dB) | Comprehensive S/N: >108dB | T.H.D: <0.4% @ 1KHz |
| Effective Working Distance | Generally >60 Meters (in open spaces) |
| Power & Dimensions | AC 100-240V, 10W | Size: 421x430x206 mm | Weight: 1.8KG (EIA 1U) |
Transmitter Options (Interchangeable)
| Feature | Handheld Microphone | Conference Base (AA) | Conference Base (Lithium) |
|---|---|---|---|
| Sound Head (Capsule) | Dynamic / Capacitive (Heart-shaped) | Dynamic / Capacitive (Heart-shaped) | Dynamic / Capacitive (Heart-shaped) |
| RF Power Output | 10mW | 10mW | 10mW |
| Power Supply | AA Battery x 2 | AA Battery x 2 | 18650 Lithium (Detachable/Rechargeable) |
| Battery Lifespan | ~10 Hours (100mA typical) | ~10 Hours (100mA typical) | ~11 Hours (100mA typical) |
| Size & Weight | 51mm(Ø) x 256mm(L) | 300g | Base: 130mm x 190mm | 600g Stem: 43cm (Gooseneck) / 22cm (Square) |
Base: 130mm x 190mm | 600g Stem: 43cm (Gooseneck) / 22cm (Square) |
Global Manufacturing & Project Sourcing
Maccus Audio manufactures scalable UHF wireless solutions tailored for international distributors. By offering eco-friendly 18650 lithium battery options alongside standard AA models, we provide AV contractors with the flexibility to meet modern green procurement standards. Contact us for bulk pricing and OEM services.