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!

Zk 1002 | Desertcart GERMANY

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Sold byAmazon GERMANYDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎧 Elevate your sound game with the ZK-1002 — where power meets pristine clarity!

CRYSTAL CLEAR HI FI AUDIO - Experience ultra-low distortion (<0.1% THD) with the advanced TPA3116D2 chip for pristine sound clarity.
OPTIMIZED AUDIO MATCHING - Fine-tune your setup with speaker impedance and power supply awareness to unlock the amplifier’s full sonic potential.
POWER FLEXIBILITY UNLEASHED - Supports a broad DC input range (5-24V) to fit any power setup, from compact 9V batteries to robust 24V adapters.
BUILT IN FORT KNOX PROTECTION - Multi-layer safeguards including over-voltage, under-voltage, over-heat, and short-circuit protection keep your investment safe.
SEAMLESS WIRELESS WIRED CONNECTIVITY - Switch effortlessly between Bluetooth 5.0 wireless streaming and traditional AUX input for ultimate versatility.

The ZK-1002 Bluetooth Amplifier Board by DAMGOO features the high-performance TPA3116D2 chip delivering less than 0.1% distortion for superior audio quality. It supports a versatile DC input range from 5V to 24V, enabling flexible power options. Dual audio inputs include Bluetooth 5.0 for wireless convenience and AUX for wired connections. Comprehensive protection circuits ensure durability and safety, making it an ideal choice for audiophiles seeking reliable, high-fidelity amplification in a compact form factor.

Specifications

ASIN	B07XG33WPN
Best Sellers Rank	#22,805 in Electronics ( See Top 100 in Electronics ) #113 in Audio Component Amplifiers
Brand Name	DAMGOO
Customer Reviews	4.5 4.5 out of 5 stars (1,195)
Included Components	AMPLIFIER BOARD
Item Dimensions	3.35 x 2 x 1 inches
Item Weight	130 Grams
Manufacturer	DAMGOO
Maximum Supply Voltage	24 Volts (DC)
Minimum Supply Voltage	5 Volts
Model	ZK-1002
Mounting Type	Surface Mount
Number of Channels	2
Package Type Name	anti-static bag
Part Number	1002
Supply Current	1.5 Amps
UPC	194852390287
Unit Count	1 Count
Voltage	24 Volts

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€ 22.54

Duties & taxes included

In stock

Sold byAmazon GERMANYDelivered 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 GERMANY.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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