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Hoang Bao Khoa (HBK) provides full-package sound system consulting and installation for auditoriums, restaurants, bar-clubs, schools, and more. With nearly 10 years of experience and a highly specialized technical team, we ensure that every system is designed, installed, and delivered to meet international performance standards.

Say goodbye to mic-latency, channel mismatch and interference in live shows. Discover Sennheiser EW-DX wireless systems with ultra-low latency (1.9 ms), 134 dB dynamic range, up to 293 channels and Dante integration - perfect for multi-mic broadcast, livestream and stage production.

Discover the HORIZON VHA 406A by FBT: a sophisticated bi-amplified active line-array speaker, with 600 W + 300 W power, 65 Hz-20 kHz response, 90°×20° dispersion and rugged birch-ply construction - ideal for live touring and fixed installations.

Explore the MYRA touring loudspeaker system from FBT - engineered for touring professionals, delivering precision sound, rugged build and advanced connectivity

Learn what the pilot tone is in EW G3/G4 wireless mic systems - how it supports squelch, avoids interference and improves signal reliability

Troubleshoot why your EW G3/G4 receiver shows no RF signal - check RF Mute, antennas, range or distribution system for clear wireless performance.

Troubleshoot interference and noise on Sennheiser EW G3/G4 systems - learn how to identify RF issues, check clean frequencies, and optimise wireless performance

Discover how to co-ordinate frequencies and distribute antennas for EW G3/G4 multichannel systems - best practices for interference-free wireless setups.

Learn how to scan for clean frequencies and sync transmitter and receiver in the XSW 2 system - step by step guide to SET SCAN, SYNC and squelch settings.

Step-by-step instructions to scan for new frequencies and synchronise XSW 1 transmitters and receivers. Quick guide to SET SCAN, SYNC and squelch settings. Learn more at this article