SGPRO SG-400F4B 4-Channel Wireless Microphone System, Metal Receiver

The metal receiver gives the SGPRO SG-400F4B a sturdier housing than a basic plastic unit, and its four-channel setup is intended for events and live performance.

It operates on fixed frequencies in the 520–550 MHz range. The system is described as reaching up to 250 feet in open space, with detachable BNC antennas.

One package detail deserves attention: the product title refers to a headset system, while the included-components list specifies four handheld microphones and one receiver. The listing does not clearly confirm that headset units are included.

Quick overview

This is a four-channel UHF wireless microphone system with separate volume control and separate outputs. The receiver provides 6.35 mm and independent XLR connections, making it suitable for connecting to audio equipment such as an amplifier, mixer, or speaker. RF and AF indicators offer a visual reference at the receiver, while the handheld transmitter displays its channel and frequency.

The fixed-frequency design favors a straightforward setup: the system uses preset frequencies rather than offering frequency adjustment. That can suit a recurring event where the same setup is used, but gives less flexibility than a system with selectable frequencies. The stated 250-foot range applies to open space, not every room or venue layout.

Practical tips

The manufacturer recommends keeping a clear line of sight between microphones and receiver, placing the system away from other wireless devices, and avoiding large metal surfaces that may reflect or block signals. These steps are relevant when setting up in a venue with other audio equipment or potential obstructions.

The product information recommends rechargeable AA batteries and suggests keeping disposable AA batteries as backup. It states that a fresh pair can last up to four hours in a handheld microphone, actual use may vary. Since the listed included components are handheld microphones, confirm that format suits your performers before choosing this system.

Getting the most from it

What does fixed frequency mean in practice? The receiver and transmitters use preset radio frequencies, so setup does not involve selecting a different frequency on the fly. That simplicity can be useful when the system is kept in a consistent configuration. If wireless conditions change or nearby devices create interference, the manufacturer’s advice is to create distance from those devices and maintain line of sight rather than expecting to retune the system.

For a small event, the separate outputs and volume controls can help when connecting the receiver to a mixer or amplifier. The 6.35 mm and XLR options also give you more than one connection format to work with. A solid pick if you want four wireless channels, metal receiver construction, and a fixed-frequency setup for speaking or singing. Better avoided if you specifically need adjustable frequencies, or if your setup depends on headset microphones that are not clearly listed among the included components.

When it makes sense

The SG-400F4B is worth considering for events and live performances where several microphones need to feed compatible audio equipment and a repeatable setup matters more than frequency flexibility. Its receiver indicators, independent outputs, and stated open-space range are practical details for planning that kind of use.

Compared with a simpler single-microphone system, its four-channel format is aimed at handling multiple performers or speakers through one receiver. For a changing RF environment, a system with adjustable frequencies would be a more suitable approach. The main buying decision here is also the microphone format: the listing highlights headset configurations but names handheld microphones in the package contents, so the available details do not resolve that mismatch.