: The unit must be reliably earthed (grounded) to prevent electrical hum and ensure user safety. Additional resources for sound system setup and maintenance Buying & Used Listings Technical Support Where to find QM4 equipment
Bluetooth version: 5.0 (typical) Wireless range: Up to 10 meters (33 feet) open space audio choice qm4 manual
This article is an informational guide based on typical features found in Audio Choice QM4 devices. For model-specific details, always refer to the official manual included with your product. Specifications and features may vary by revision. : The unit must be reliably earthed (grounded)