The THEOS DIFB (Global Unit) is a digital IFB receiver built with a metal body for professional production environments. Its hardware features an ultra-wide band tuning range of 550–960 MHz with Global OneBandTM to comply with local RF regulations. The unit incorporates a true-diversity system with two SMA antenna connectors to maintain a stable signal.

The user interface elements include a large colour display and a metal dial for volume and selection. It is equipped with a locking 3.5 mm headphone connector for secure connections. The receiver is compatible with THEOS transmitters and supports scanning and pairing functionality. It can store up to 20 frequency presets for efficient switching. Power is supplied by two AA batteries, offering up to 17 hours of operation with lithium batteries, or through a USB-C port for continuous external power. A text-to-speech function audibly announces the DID name for channel identification.

For remote management, the receiver integrates with the Sidus Audio app via Bluetooth, allowing RF scans, programming of preset banks and frequency coordination. The device also supports direct connection with Bluetooth headphones.