EWM104-BT3040(DAC) is a long-range (220m) Bluetooth 5.1/5.2 audio transmission module based on the Qualcomm QCC3040 chip, supporting lossless audio codecs like LDAC and aptX-HD with analog DAC output, designed specifically for high-quality wireless audio and IoT applications.
| Parameter | Specification |
| Core Chip | Qualcomm QCC3040 |
| Bluetooth Version | BLE 5.1 / BLE 5.2 |
| Communication Distance | 220m (in open line-of-sight environment) |
| Supported Audio Codecs | LDAC, aptX, aptX-HD, aptX-AD, aptX-LL, AAC, SBC |
| Audio Output Interface | Analog DAC |
| Operating Frequency | 2.4GHz |
| Module Type | Bluetooth Audio Transmiss ion Module |
| Manufacturer | CDEBYTE |
Application Scenarios
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Hi-Fi Wireless Audio Devices: Ideal for developing high-end Bluetooth speakers, wireless headphones, or TWS earbuds, leveraging LDAC and aptX-HD for a CD-level sound experience.
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Home Theater & TV Transmitters: Acts as an audio transmitter for TVs or PCs. With aptX-LL (Low Latency) technology, it ensures perfectly synchronized audio and video for immersive gaming and movie watching.
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Smart Home Background Music Systems: Thanks to its impressive 220-meter long-range transmission, it can easily cover an entire house for multi-room synchronized audio playback.
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Public Broadcasting & Industrial Voice Prompts: Suitable for wireless voice broadcasting systems in malls, schools, or factory floors, offering stable connections and strong anti-interference capabilities.
FAQ
Q1: Can this module really reach a transmission distance of 220 meters?
Yes. The 220m distance is tested by Ebyte in an open, line-of-sight environment. We have deeply optimized the RF hardware design. In indoor scenarios with walls or complex obstacles, the actual distance will be reduced, but it still significantly outperforms standard Bluetooth audio modules on the market.
Q2: What is the difference between the DAC version and the I2S version? Which one should I choose?
This DAC version has a built-in digital-to-analog converter that outputs analog audio signals directly. You can easily connect it to traditional amplifiers or speakers, making it ideal for rapid development. If you have your own high-end external DAC chip and want audiophile-grade sound quality, we recommend choosing our I2S version to output pure digital signals.
Q3: Will there be audio latency when watching videos or playing games with this module?
There will be no noticeable latency. Powered by the QCC3040 chip, this module natively supports aptX-LL (Low Latency) and aptX-AD (Adaptive) codecs. When paired with compatible devices, it reduces latency to a microsecond level, ensuring perfect audio-video synchronization.
Q4: I am buying for my company. Do you provide relevant technical documents and firmware support?
Absolutely. As a professional IoT module manufacturer, Ebyte provides comprehensive product datasheets, AT command manuals, and development guides for all customers. For enterprise customers making bulk purchases, we also offer timely factory technical support to help accelerate your project deployment.
