GTD Audio 2x800 Channel UHF Wireless Mic System 733HL - Reliable Range

Our review of the GTD Audio 733HL wireless microphone system finds it best suited to small venues, presenters, and mobile operators who need reliable audio with flexible mic options. The single biggest reason to buy is its combination of 800 selectable frequencies per channel and true diversity reception, which together deliver consistent signal and reduced dropouts across a long usable range. For anyone requiring a handheld and lavalier combo with straightforward setup and good sound quality, this system is a practical, value-oriented choice.

Key Features

• 800 selectable frequencies: Offers extensive channel choices so users can avoid interference and run multiple systems simultaneously.
• True diversity operation: Uses two receiver paths to reduce dropouts and improve overall signal reliability at range.
• Automatic frequency scanning: Scans the band and picks a clean channel quickly, making setup easier in crowded RF environments.
• Automatic transmitter setup: Synchronizes transmitter and receiver channels without fiddly manual tuning for faster deployment.
• Long range performance: Rated for up to 450 ft (150 m) which suits medium-sized rooms, outdoor events, and stage use.
• Multiple system compatibility: Up to 20 sets can be used at the same time when frequencies are coordinated for multi-mic setups.

Who It's For

The 733HL is aimed at event presenters, worship teams, and mobile DJs who need a dependable handheld and lavalier option with good wireless range and straightforward setup. Its automatic syncing and frequency scanning make it useful for users who want reliable performance without technical RF expertise.

It may be less suitable for studio recording engineers who demand ultra-low noise floor or for large touring productions that require advanced rack systems and high-end RF coordination tools. Those users should consider more specialized broadcast-level systems.

Pros & Cons

Pros

• Multiple channels and 800 selectable frequencies give strong flexibility to avoid interference.
• True diversity receiver improves signal quality and reduces dropouts across longer distances.
• Automatic scanning and transmitter sync make setup fast and user-friendly for non-technical operators.
• Includes both handheld and lavalier microphones for versatile use in one package.

Cons

• Some users report mixed feedback on noise level, so quiet studio tasks may reveal hiss more than pro broadcast gear.

Specifications

Model	G-733 (733HL)
Channels per unit	2x800 selectable frequencies
Operation	True diversity receiver
Frequency range	550 MHz - 590 MHz (adjustable)
Range	Up to 450 ft (150 m)
Simultaneous sets	Up to 20 sets

Our Verdict

The GTD Audio 733HL is a sensible choice for presenters, houses of worship, and small performance groups who need a reliable handheld and lavalier combo without complex setup. Its true diversity reception, wide frequency options, and automatic syncing deliver dependable live performance value, though users seeking the lowest possible noise floor for studio work should consider more expensive alternatives.

Frequently Asked Questions

Can I use multiple 733HL systems together?
You can use up to 20 sets at the same time when frequencies are coordinated to avoid interference.

How far will the system reach?
The system is rated for up to 450 ft (150 m) in open line-of-sight conditions; obstacles and RF environment will reduce practical range.

Is setup difficult for non-technical users?
No, the automatic frequency scanning and transmitter synchronization make setup straightforward for users without RF expertise.