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50W+50W+100W 2.1 Channel Subwoofer Amplifier Board with Treble and Bass Control, Dual TPA3116 Chip, DC 12-24V, Bluetooth and AUX Inputs, DIY Wireless Speakers AMP Board, Password Free (ZK-TB21)

50W+50W+100W 2.1 Channel Subwoofer Amplifier Board with Treble and Bass Control, Dual TPA3116 Chip, DC 12-24V, Bluetooth and AUX Inputs, DIY Wireless Speakers AMP Board, Password Free (ZK-TB21)

Q: Does it come with a power cord ?

No, you can use a 19v laptop charger but to get this thing fed what it needs buy a 24v 250watt power supply.

Q: What is the low pass cut off for the subwoofer?

The frequency of the bass channel is 20hz-200hz

Q: Would I be able to hook up a regular speaker to the "subwoofer" channel, if I wanted to individually control the volume of that one speaker?

The answer that specifies your frequency limitations is correct. If you connect a full range speaker, it will not sound good. But you can if you don't care about sound quality, in which case you should just go back under your rock and stay there.

Q: I would want to use this for aux input only. can i set it to default to aux input? or do i have to switch from bluetooth to aux each time i power on?

It comes default in aux , there is no such switch for it , to answer your question in simple words, when you get it just connect the aux to it and don't werry about nothing else.

Product ID: 372229617

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Details

Item dimensions L x W x H
120 x 100 x 22
Voltage
24 Volts
Manufacturer
DAMGOO
Maximum supply voltage
24 Volts (DC)
Minimum supply voltage
12 Volts (DC)

📶Bluetooth 5.0 with 49ft range

🔊200W total output power

🎚️Adjustable treble & bass control

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50W+50W+100W 2.1 Channel Subwoofer Amplifier Board with Treble and Bass Control, Dual TPA3116 Chip, DC 12-24V, Bluetooth and AUX Inputs, DIY Wireless Speakers AMP Board, Password Free

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Description

🎵 Elevate your sound game—because average audio is so last decade!

TAILOR YOUR SOUNDSCAPE - Fine-tune highs and lows effortlessly with dedicated treble and bass knobs—because your playlist deserves perfection.
PLUG PLAY DIY FRIENDLY - Intuitive interface logos and included accessories make setup a breeze—no manual needed, just pure audio bliss.
IMMERSIVE 2 1 CHANNEL POWERHOUSE - Experience crystal-clear stereo with a booming 100W subwoofer output for theater-like sound at home.
BUILT TO LAST WITH SMART PROTECTIONS - Overheat, overvoltage, undervoltage, and short circuit safeguards keep your amp running safe and sound 24/7.
SEAMLESS WIRELESS WIRED CONNECTIVITY - Bluetooth 5.0 ensures lag-free streaming up to 49 feet, plus AUX input for versatile device compatibility.

The ZK-TB21 is a robust 2.1 channel amplifier board delivering 200W total power via dual TPA3116D2 chips, featuring Bluetooth 5.0 with a 49-foot range and AUX input. It offers customizable treble and bass controls for a personalized audio experience, backed by comprehensive safety protections and an easy DIY setup with clear interface markings.

Have a Question? See What Others Asked

Does it come with a power cord ?

What is the low pass cut off for the subwoofer?

Would I be able to hook up a regular speaker to the "subwoofer" channel, if I wanted to individually control the volume of that one speaker?

I would want to use this for aux input only. can i set it to default to aux input? or do i have to switch from bluetooth to aux each time i power on?

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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