Upgraded DC5V/3.7V Battery powered TWS BLE Stereo Amplifier Board 2*10W Dual CH
1. Stereo dual-channel, dual-mode input via Bluetooth sound card
2. Bluetooth 5.1 wireless connection for stable transmission of stereo audio signals
3. Supports 2×10W output, providing powerful drive for 4Ω speakers
4. Supports dual power supply options: 3.7V battery and DC 5V, offering flexible adaptation to various scenarios
5. Suitable for portable speakers and DIY Bluetooth speaker projects
Product Specifications:
Chip Type: Stereo
Number of Channels: 2 channels
Audio Input: Wireless Bluetooth / Wired sound card
Power Supply: 3.7V battery / DC 5V (Note: Voltage must not exceed 5V)
Speakers: Compatible with 4Ω speakers (2Ω speakers cannot be used)
Bluetooth Version: 5.1
Output Power: 2×10W (Peak distortion power up to 2×10.6W)
Output Impedance: 4Ω
Power Consumption (On/Standby): Less than 35mA
Power Consumption (Off/Standby): Less than 25μA
Charging Current: 0.8±0.1A
Temperature Rise During Charging: <30°C (Rise based on ambient temperature)
3000 mAh battery life reference (with dual 4Ω speakers and default EQ): at half volume, standard songs > 20 hours; at maximum volume, standard songs > 8 hours
Bluetooth connection range with smartphone: ≥10 meters (transmitter and receiver in a non-metallic, enclosed environment)
Codec: Basic SBC
Protection mechanisms: Over-temperature and over-current protection
Mainboard dimensions: 39 × 46 mm; thickness: 12 mm
Product Notes:
-The use of hot melt adhesive is strictly prohibited.
-For the charging indicator on the extension cord, the red light will not illuminate unless the red LED from the mainboard is removed. Additionally, the charging indicator will not turn off once the battery is fully charged.
-If you want the light to turn off when fully charged, connect a wire across the two terminals of the red LED on the mainboard.
-You must use a 3.7V battery with an overcurrent rating of 5A or higher and a protection circuit. Otherwise, the battery will trigger protection at maximum volume.
-When using a 5V/3A power adapter without a battery, the volume must not exceed 50%; otherwise, the device will reboot.
-The amplifier’s signal-to-noise ratio is 67, meaning you’ll hear white noise at very low volumes when your ear is about 10 cm from the speaker. If this bothers you, please do not purchase.
-The tuning software does not support Windows 7 or earlier systems.
-Supports expansion with up to 30 5V RGB LEDs.
-Hidden volume up/down solder pads.
-Can charge the battery.
-Powered by a single power battery
-Supports EQ tuning and saving via computer
-10-band EQ gain with DRC dynamic compression
-Power button (single-click to turn on, long-press to turn off, triple-click for TWS pairing, quadruple-click to clear TWS pairing)
-M button (single-press to toggle lighting, double-click for next track, triple-click for previous track, long-press to switch between sound card and Bluetooth)
-One-piece inductor with black-gold capacitors
Note: Regarding background noise—if this bothers you, please do not purchase.
① High-sensitivity speaker
② In a quiet environment, measured at a distance of less than 30 cm in the vertical direction
③ A faint “hiss” of white noise may be audible at the minimum volume setting
***Power Supply Requirements:
1. Battery input: 3.3–4.2 V. The current from the battery connector to the mainboard must meet the following requirements: continuous discharge of 5 A, peak discharge of 8 A. For example, a 2000 mAh 5C battery or a 3000 mAh 3C battery.
Battery protection board: Must have at least 4 8-pin MOSFETs.
2. Connect the adjustable power supply to the battery socket; voltage must be 3.3V–4.2V, and current must exceed 14A to meet peak load requirements.
3. The device will not power on without a battery.
Battery wire requirements: Wire gauge must be thicker than #22, and wire length must be less than 200 mm (<20 cm).
Frequently Asked Questions
① Causes of loud sounds, reboots, stuttering, or shutdowns: Insufficient power supply—please refer to the power supply requirements and verify the parameters of the battery, protection board, and battery wires. (Note: Currently, in 1 out of every 3,000 cases, high speaker volume causes the mainboard to reboot; this is due to very thin copper wire costing just over one yuan.) Aside from this, there are no other known causes.
② How to pair? — Disconnect your phone, turn on the speaker, and quickly press the power button three times to initiate pairing — wait 10 seconds and rescan for a Bluetooth connection. The left channel initiates pairing. Pressing the power button four times cancels pairing.
③ The sound seems very faint —— This is extremely rare. Your phone needs to have the Bluetooth volume synchronization feature enabled — Settings > Bluetooth > Advanced > check “Volume
Synchronization” or “Absolute Volume,” or connect a tactile switch to the volume pad reserved on the mainboard for control.
Product List:
1x Module
2x Speaker Wires
1.We only ship to the confirmed address provided by eBay. please make sure your ebay address is 100% matches the address you would like us to ship to. If not, please let us know before we sent you the package, or we will not be responsible for any loss. hope you could understand.
2.Orders will be processed instantly and dispatched within 1-2 business days except hoilday, so we do NOT accept any email/message note after you place orders.
3.All package need to wait 30 days,Please take care it.Less than 30 days,we can't take a refund.
1.We greatly appreciate your POSITIVE feedback. Please do NOT leave negative feedback without asking for help.
2.Please DON'T leave negative or neutral feedback if you haven't received item in 30 days, because we have mentioned the shipping time repeatedly.
1.We accept PayPal payment ONLY, and must be received within 5 days from the date of purchase.
2. It is easy and safe for you to pay by credit cards, debit cards, bank transfers and PayPal account balances.
3.Buyers are responsible for import duties,custom fees and taxes, if any, please check your country.
1.We believe our items are so outstanding. We are convinced you will be happy with your Purchase.
2. If you do not satisfy with our items. Please simply return to us within 30 Days in original condition. Just pay for the returned postage. Then we can issue full refund or resend the item to you after the returned item arrived at our warehouse.
3. Please include your eBay ID and item number with any email requests.
1. If you have any questions, please feel free to email our service specialists.
2.Just contact us using the " Ask the seller a question" link on eBay.
3.Our aim is to provide Top Level Customer Service, normally so we will try our best to solve any problem.
1. Stereo dual-channel, dual-mode input via Bluetooth sound card
2. Bluetooth 5.1 wireless connection for stable transmission of stereo audio signals
3. Supports 2×10W output, providing powerful drive for 4Ω speakers
4. Supports dual power supply options: 3.7V battery and DC 5V, offering flexible adaptation to various scenarios
5. Suitable for portable speakers and DIY Bluetooth speaker projects
Product Specifications:
Chip Type: Stereo
Number of Channels: 2 channels
Audio Input: Wireless Bluetooth / Wired sound card
Power Supply: 3.7V battery / DC 5V (Note: Voltage must not exceed 5V)
Speakers: Compatible with 4Ω speakers (2Ω speakers cannot be used)
Bluetooth Version: 5.1
Output Power: 2×10W (Peak distortion power up to 2×10.6W)
Output Impedance: 4Ω
Power Consumption (On/Standby): Less than 35mA
Power Consumption (Off/Standby): Less than 25μA
Charging Current: 0.8±0.1A
Temperature Rise During Charging: <30°C (Rise based on ambient temperature)
3000 mAh battery life reference (with dual 4Ω speakers and default EQ): at half volume, standard songs > 20 hours; at maximum volume, standard songs > 8 hours
Bluetooth connection range with smartphone: ≥10 meters (transmitter and receiver in a non-metallic, enclosed environment)
Codec: Basic SBC
Protection mechanisms: Over-temperature and over-current protection
Mainboard dimensions: 39 × 46 mm; thickness: 12 mm
Product Notes:
-The use of hot melt adhesive is strictly prohibited.
-For the charging indicator on the extension cord, the red light will not illuminate unless the red LED from the mainboard is removed. Additionally, the charging indicator will not turn off once the battery is fully charged.
-If you want the light to turn off when fully charged, connect a wire across the two terminals of the red LED on the mainboard.
-You must use a 3.7V battery with an overcurrent rating of 5A or higher and a protection circuit. Otherwise, the battery will trigger protection at maximum volume.
-When using a 5V/3A power adapter without a battery, the volume must not exceed 50%; otherwise, the device will reboot.
-The amplifier’s signal-to-noise ratio is 67, meaning you’ll hear white noise at very low volumes when your ear is about 10 cm from the speaker. If this bothers you, please do not purchase.
-The tuning software does not support Windows 7 or earlier systems.
-Supports expansion with up to 30 5V RGB LEDs.
-Hidden volume up/down solder pads.
-Can charge the battery.
-Powered by a single power battery
-Supports EQ tuning and saving via computer
-10-band EQ gain with DRC dynamic compression
-Power button (single-click to turn on, long-press to turn off, triple-click for TWS pairing, quadruple-click to clear TWS pairing)
-M button (single-press to toggle lighting, double-click for next track, triple-click for previous track, long-press to switch between sound card and Bluetooth)
-One-piece inductor with black-gold capacitors
Note: Regarding background noise—if this bothers you, please do not purchase.
① High-sensitivity speaker
② In a quiet environment, measured at a distance of less than 30 cm in the vertical direction
③ A faint “hiss” of white noise may be audible at the minimum volume setting
***Power Supply Requirements:
1. Battery input: 3.3–4.2 V. The current from the battery connector to the mainboard must meet the following requirements: continuous discharge of 5 A, peak discharge of 8 A. For example, a 2000 mAh 5C battery or a 3000 mAh 3C battery.
Battery protection board: Must have at least 4 8-pin MOSFETs.
2. Connect the adjustable power supply to the battery socket; voltage must be 3.3V–4.2V, and current must exceed 14A to meet peak load requirements.
3. The device will not power on without a battery.
Battery wire requirements: Wire gauge must be thicker than #22, and wire length must be less than 200 mm (<20 cm).
Frequently Asked Questions
① Causes of loud sounds, reboots, stuttering, or shutdowns: Insufficient power supply—please refer to the power supply requirements and verify the parameters of the battery, protection board, and battery wires. (Note: Currently, in 1 out of every 3,000 cases, high speaker volume causes the mainboard to reboot; this is due to very thin copper wire costing just over one yuan.) Aside from this, there are no other known causes.
② How to pair? — Disconnect your phone, turn on the speaker, and quickly press the power button three times to initiate pairing — wait 10 seconds and rescan for a Bluetooth connection. The left channel initiates pairing. Pressing the power button four times cancels pairing.
③ The sound seems very faint —— This is extremely rare. Your phone needs to have the Bluetooth volume synchronization feature enabled — Settings > Bluetooth > Advanced > check “Volume
Synchronization” or “Absolute Volume,” or connect a tactile switch to the volume pad reserved on the mainboard for control.
Product List:
1x Module
2x Speaker Wires
1.We only ship to the confirmed address provided by eBay. please make sure your ebay address is 100% matches the address you would like us to ship to. If not, please let us know before we sent you the package, or we will not be responsible for any loss. hope you could understand.
2.Orders will be processed instantly and dispatched within 1-2 business days except hoilday, so we do NOT accept any email/message note after you place orders.
3.All package need to wait 30 days,Please take care it.Less than 30 days,we can't take a refund.
1.We greatly appreciate your POSITIVE feedback. Please do NOT leave negative feedback without asking for help.
2.Please DON'T leave negative or neutral feedback if you haven't received item in 30 days, because we have mentioned the shipping time repeatedly.
1.We accept PayPal payment ONLY, and must be received within 5 days from the date of purchase.
2. It is easy and safe for you to pay by credit cards, debit cards, bank transfers and PayPal account balances.
3.Buyers are responsible for import duties,custom fees and taxes, if any, please check your country.
1.We believe our items are so outstanding. We are convinced you will be happy with your Purchase.
2. If you do not satisfy with our items. Please simply return to us within 30 Days in original condition. Just pay for the returned postage. Then we can issue full refund or resend the item to you after the returned item arrived at our warehouse.
3. Please include your eBay ID and item number with any email requests.
1. If you have any questions, please feel free to email our service specialists.
2.Just contact us using the " Ask the seller a question" link on eBay.
3.Our aim is to provide Top Level Customer Service, normally so we will try our best to solve any problem.
Am 17.06.2026 hat der Verkäufer die folgenden Angaben hinzugefügt: