I plan to use this to drive piezoelectric tweeters at ultrasonic frequencies. What is the upper range of this amplifier?

The TI datasheet for the chip used in this amplifier shows about 28db of gain in a pretty flatline between 20 Hz to almost 40KHz. By 100KHz you lose about 6db of gain. So assuming their isn't additional RC filtering on your input signal. All bets are off with Bluetooth though. My guess is you are going to lose anything about the typically specified 20 - 20KHz using a bluetooth input just due to the ADC limitations.

Do you know what size of nut I need for the volume nob? I need a new one

Bring the board to a hardware store and see if you can find one, but being such a big ID and small OD and super thin, you're going to be hard pressed to find one without ordering the specific potentiometer

can you custom name the bluetooth device?

Yes on a iPhone you can! Go to blue tooth devices.... click the name you connected to ( when connected to the device) go to info and rename device.

Why am i getting a buzzung when there is no music? Very small audible hum

I initially had a hum when I plugged into the headphone jack of my tv as well. I simply had to adjust the tv sound settings to Theater mode and the hum went away and the sound now works great!

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DAJUNGUO 1002S 2.0 Bluetooth Amplifier Board with Dual TPA3116D2 Chips, 100W+100W Power Output, Wide Voltage Range of 9-24V DC, Bluetooth/USB/3.5mm AUX Input Modes Supported

DAJUNGUO 1002S 2.0 Bluetooth Amplifier Board with Dual TPA3116D2 Chips, 100W+100W Power Output, Wide Voltage Range of 9-24V DC, Bluetooth/USB/3.5mm AUX Input Modes Supported

Product ID: 160287121

Details

Item dimensions L x W x H
4.33 x 2.32 x
Manufacturer
DAMGOO
Maximum Supply Voltage
24
Minimum Supply Voltage
9
Voltage
24 volts

📡Bluetooth + USB + AUX inputs

🔊200W peak power output

🔋Wide 9-24V voltage range

€ 41.46

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Description

🎶 Power your sound, own the vibe — anytime, anywhere!

PLUG PLAY SAFETY - Upgraded spark-free DC socket ensures reliable, safe power connections for uninterrupted listening.
VOLTAGE VERSATILITY - Operates smoothly across a broad 9-24V DC range, perfect for diverse setups and power sources.
DUAL HI FI POWERHOUSE - Dual TPA3116D2 chips deliver crisp, room-filling 100W+100W sound per channel.
SMART INPUT INDICATORS - Intuitive LED indicators keep you informed of your current audio source at a glance.
SEAMLESS MULTI DEVICE CONNECTIVITY - Effortlessly switch between Bluetooth, USB, and 3.5mm AUX inputs for ultimate audio flexibility.

The DAJUNGUO 1002S is a compact yet powerful 2.0 Bluetooth amplifier board featuring dual TPA3116D2 chips that deliver a robust 200W total output. Supporting Bluetooth, USB, and 3.5mm AUX inputs, it offers versatile connectivity for smartphones, laptops, and more. Its wide 9-24V DC voltage range and upgraded spark-free DC socket ensure stable, safe operation. Ideal for audiophiles and DIY enthusiasts seeking high-fidelity sound with modern convenience.

Specifications

ASIN	B0CCYTWRMX
Best Sellers Rank	#54,338 in Electronics ( See Top 100 in Electronics ) #315 in Audio Component Amplifiers
Brand Name	DAMGOO
Customer Reviews	4.6 4.6 out of 5 stars (31)
Included Components	AMPLIFIER BOARD
Item Dimensions	4.33 x 2.32 x 0.9 inches
Manufacturer	DAMGOO
Maximum Output Power	200 watts
Maximum Supply Voltage	24 volts_of_direct_current
Minimum Supply Voltage	9 volts_of_direct_current
Model	1002S
Mounting Type	Surface Mount
Number of Channels	2
Output Power	200 watts
Part Number	1002S
UPC	194852391512
Unit Count	1 Count
Voltage	24 volts

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€ 41.46

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Greece.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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