MH-M38 Bluetooth Audio Power Amplifier Board Dual-channel 2*5W
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Shipping
We are an online wholesale platform and shipping costs are charged separately for greater benefit to you.
Air freight costs are based on the weight of the product (including packaging bags and cushioning materials). For products under 2kg, freight is calculated in 50g increments. For products between 2kg and 4kg, freight is calculated in 100g increments. For products over 4kg, freight is calculated in 1kg increments.
If your order exceeds 4kg or the shipping cost exceeds $70, we recommend contacting our customer service for an accurate shipping quote. You will need to provide your zip code address when you contact us.
Air freight options include DHL, UPS, FedEx, and Yun Express, with a delivery time of 7-12 days.
When the weight of the express delivery exceeds 12kg or air shipping cost exceeds US$100 or sea shipping cost exceeds US$50, you can choose B2B shipping:
Air freight(10-14 days)
Yun quik boat sea freight (15-20 days)
Quik boat sea freight(20-25 days).
Air freight B2B express |
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| US Area | Unit Price | Date | Last-mile Delivery |
| Western United States (zip codes starting with 8 or 9) |
US$7.5/kg + US$2 | 10-15 days | UPS / FEDEX / GOFO |
| Central United States (zip codes starting with 4, 5, 6, or 7) |
US$8.5/kg + US$2 | ||
| Eastern United States (zip codes starting with 0, 1, 2, or 3) |
US$9.0/kg + US$2 | ||
Yun quit boat sea freight B2B express |
|||
| US Area | Unit Price | Date | Last-mile Delivery |
| Western United States (zip codes starting with 8 or 9) |
US$3.4/kg + US$2 | 15-20 days | UPS / FEDEX / GOFO |
| Central United States (zip codes starting with 4, 5, 6, or 7) |
US$3.6/kg + US$2 | ||
| Eastern United States (zip codes starting with 0, 1, 2, or 3) |
US$3.8/kg + US$2 | ||
Quit boat sea freight B2B express |
|||
| US Area | Unit Price | Date | Last-mile Delivery |
| Western United States (zip codes starting with 8 or 9) |
US$2.6/kg + US$2 | 20-25 days | UPS / FEDEX / GOFO |
| Central United States (zip codes starting with 4, 5, 6, or 7) |
US$2.8/kg + US$2 | ||
| Eastern United States (zip codes starting with 0, 1, 2, or 3) |
US$3.0/kg + US$2 | ||
Processing starts after your payment confirmed. Normally, it needs 2-5 days. The processing time depends on the quantity of items.
1. Power Supply: It can be directly powered by a 5V MICRO USB Android cable, or by connecting a separate 5V power supply or a 3.7V lithium battery (as shown in the diagram). Note that the 5V and 3.7V power supply interfaces are different. The 5V connector is connected to 5V and GND, and the 3.7V lithium battery connector is connected to VBAT and GND. The maximum operating current is 5V 2A. It is recommended to use a 5V 2A regulated power supply for better sound quality.
2. Supports USB sound cards, driverless (plug and play). Connect the module to the computer using a USB data cable, and music played on the computer will be amplified through the module's output.
3. Audio Output: Outputs left and right channel stereo audio signals, which can be connected to two 2-8 ohm, 3-5W speakers respectively. A 4-ohm 5W speaker is recommended.
4. This product has a built-in dual 5W amplifier circuit. Do not connect a separate amplifier! The outputs of the two amplifiers cannot be connected in parallel or their negative terminals can be connected together, otherwise the amplifier chip will be damaged.
After the module is powered on, the phone will search for the Bluetooth name MH-M38. Once connected, music can be played.
Module Blue Indicator Light:
When Bluetooth is not connected, the indicator light flashes rapidly.
When Bluetooth is connected, the indicator light remains solid.
When Bluetooth is playing music, the indicator light flashes slowly.
Bluetooth Version: Bluetoothooch V4.2
Supported Bluetooth Protocols: HFPV1.7, A2DPV1.2, AVRCPPV1.5, AVCTPV1.2, AVDTPV1.2
Format Support: Supports lossless decoding of WAV/WMA/FLAC/APE/MP3, stereo dual-channel output
Operating Voltage: 5V/3.7V-4.2V
Operating Temperature: -40°C to +85°C
Sensitivity: -87dBm