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  5. HT21 Upgraded 2.1 Channel Mini Wireless Hi-Fi Amplifier Board with TDA7498E Hi-Fi Chip, 160W×2+220W Home Amplifier, Supplier-Made, BT/USB/AUX Flexible Connectivity, Dual Expansion Ports, DC 15-36V, Easy Integration for DIY Home Speakers Customization
HT21 Upgraded 2.1 Channel Mini Wireless Hi-Fi Amplifier Board with TDA7498E Hi-Fi Chip, 160W×2+220W Home Amplifier, Supplier-Made, BT/USB/AUX Flexible Connectivity, Dual Expansion Ports, DC 15-36V, Easy Integration for DIY Home Speakers Customization
HT21 Upgraded 2.1 Channel Mini Wireless Hi-Fi Amplifier Board with TDA7498E Hi-Fi Chip, 160W×2+220W Home Amplifier, Supplier-Made, BT/USB/AUX Flexible Connectivity, Dual Expansion Ports, DC 15-36V, Easy Integration for DIY Home Speakers Customization
HT21 Upgraded 2.1 Channel Mini Wireless Hi-Fi Amplifier Board with TDA7498E Hi-Fi Chip, 160W×2+220W Home Amplifier, Supplier-Made, BT/USB/AUX Flexible Connectivity, Dual Expansion Ports, DC 15-36V, Easy Integration for DIY Home Speakers Customization
HT21 Upgraded 2.1 Channel Mini Wireless Hi-Fi Amplifier Board with TDA7498E Hi-Fi Chip, 160W×2+220W Home Amplifier, Supplier-Made, BT/USB/AUX Flexible Connectivity, Dual Expansion Ports, DC 15-36V, Easy Integration for DIY Home Speakers Customization
HT21 Upgraded 2.1 Channel Mini Wireless Hi-Fi Amplifier Board with TDA7498E Hi-Fi Chip, 160W×2+220W Home Amplifier, Supplier-Made, BT/USB/AUX Flexible Connectivity, Dual Expansion Ports, DC 15-36V, Easy Integration for DIY Home Speakers Customization
HT21 Upgraded 2.1 Channel Mini Wireless Hi-Fi Amplifier Board with TDA7498E Hi-Fi Chip, 160W×2+220W Home Amplifier, Supplier-Made, BT/USB/AUX Flexible Connectivity, Dual Expansion Ports, DC 15-36V, Easy Integration for DIY Home Speakers Customization
HT21 Upgraded 2.1 Channel Mini Wireless Hi-Fi Amplifier Board with TDA7498E Hi-Fi Chip, 160W×2+220W Home Amplifier, Supplier-Made, BT/USB/AUX Flexible Connectivity, Dual Expansion Ports, DC 15-36V, Easy Integration for DIY Home Speakers Customization
HT21 Upgraded 2.1 Channel Mini Wireless Hi-Fi Amplifier Board with TDA7498E Hi-Fi Chip, 160W×2+220W Home Amplifier, Supplier-Made, BT/USB/AUX Flexible Connectivity, Dual Expansion Ports, DC 15-36V, Easy Integration for DIY Home Speakers Customization
HT21 Upgraded 2.1 Channel Mini Wireless Hi-Fi Amplifier Board with TDA7498E Hi-Fi Chip, 160W×2+220W Home Amplifier, Supplier-Made, BT/USB/AUX Flexible Connectivity, Dual Expansion Ports, DC 15-36V, Easy Integration for DIY Home Speakers Customization
HT21 Upgraded 2.1 Channel Mini Wireless Hi-Fi Amplifier Board with TDA7498E Hi-Fi Chip, 160W×2+220W Home Amplifier, Supplier-Made, BT/USB/AUX Flexible Connectivity, Dual Expansion Ports, DC 15-36V, Easy Integration for DIY Home Speakers Customization
4.5
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L**_
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Verified purchase
US
amazing product from my experience so far, I haven't been able to really use it that much yet, but from the time I did use it, I really like it
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2026-08-16
**
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Verified purchase
US
I love ts it turned my thrift store speakers are alive now Quality of work: Magnificent Performance: Out of this world for a small amp
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2026-07-16
h**7
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Verified purchase
US
Muy bueno lo tengo en uso
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2026-07-28
A**e P**o
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Verified purchase
US
I ran 2-6.5 1-3” mini sub 2 tweeters this slaps then
Item:
The round board
2026-08-21
y**8
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Verified purchase
US
my thing came and when i went to turn it on it never did
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Default
2026-08-16
r**o
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Verified purchase
US
a lot of power in the subwoofer but no power on the voice at all
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The round board
2026-08-10
b**y
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Verified purchase
US
Works great with my DIY Turtle box. Fast shipping and great quality.
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Default
2026-08-07
f**x
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Verified purchase
US
Excelente producto .. se lo instale a mi camión y suena super .
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The round board
2026-07-31
a**5
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Verified purchase
US
Great product for value and it puts out great sound when hooked up to right power source (my fault when I first used it) but I really like it on my boat
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Default
2026-07-22
1**s
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Verified purchase
US
Amazing Product I really like it ‘ sound really good 👍
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Default
2026-07-19
b**o
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Verified purchase
US
It’s good has worked perfect and gives your speakers a big boost on loudness
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The round board
2026-07-19
J**n T**e
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Verified purchase
US
Great product does exactly what I want with more power than expected.( my expectations were not super high)
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Default
2026-07-11
M**s G**t
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Verified purchase
US
Good power but I was hoping it would be louder
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Default
2026-06-14
M**o D**z
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Verified purchase
US
Super. Cool amp. Good price 👍
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Default
2026-07-28
A**💨
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Verified purchase
US
Performance: It’s 👍🏾
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Default
2026-07-27
T**e A**i
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Verified purchase
US
Works good
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Default
2026-07-17
j**n r**s
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Verified purchase
US
Nice
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Default
2026-07-18
s**3
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Verified purchase
US
Thanks
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Default
2026-07-07
•**
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Verified purchase
US
Item:
The round board
2026-08-17
B**n L**z
·
Verified purchase
US
Item:
The round board
2026-08-09
About this product
Highlights
2.1 channel home amplifier board with hi-fi audio design
Power output of 160W×2+220W for robust home audio performance
Built-in TDA7498E hi-fi chip for improved audio quality and clarity
Bluetooth support plus BT/USB/AUX flexible connectivity options
Dual expansion ports and DC 15-36V input for easier DIY integration
Details
With batteryNo
Amplifier typeHome amplifier,For indoor,Mini amplifier
Connectivity Technologybluetooth
Warranty typeSupplier warranty
Packaging typeBox
Product description
·High Power Output:Delivers 160W×2+220W, ensuring robust sound performance for your home audio setup.
·Hi-Fi Chip:Equipped with TDA7498E Hi-Fi chip for superior audio quality and clarity.
·Dual Expansion:Features dual expansion ports for flexible connectivity options.
·Bluetooth Support:Includes Bluetooth functionality for wireless audio streaming convenience.
·DIY Friendly:Designed for DIY home speakers, offering easy integration and customization.
HT21 Upgraded 2.1 Channel Mini Wireless Hi-Fi Amplifier Board with TDA7498E Hi-Fi Chip, 160W×2+220W Home Amplifier, Supplier-Made, BT/USB/AUX Flexible Connectivity, Dual Expansion Ports, DC 15-36V, Easy Integration for DIY Home Speakers CustomizationHT21 Upgraded 2.1 Channel Mini Wireless Hi-Fi Amplifier Board with TDA7498E Hi-Fi Chip, 160W×2+220W Home Amplifier, Supplier-Made, BT/USB/AUX Flexible Connectivity, Dual Expansion Ports, DC 15-36V, Easy Integration for DIY Home Speakers CustomizationHT21 Upgraded 2.1 Channel Mini Wireless Hi-Fi Amplifier Board with TDA7498E Hi-Fi Chip, 160W×2+220W Home Amplifier, Supplier-Made, BT/USB/AUX Flexible Connectivity, Dual Expansion Ports, DC 15-36V, Easy Integration for DIY Home Speakers CustomizationHT21 Upgraded 2.1 Channel Mini Wireless Hi-Fi Amplifier Board with TDA7498E Hi-Fi Chip, 160W×2+220W Home Amplifier, Supplier-Made, BT/USB/AUX Flexible Connectivity, Dual Expansion Ports, DC 15-36V, Easy Integration for DIY Home Speakers CustomizationHT21 Upgraded 2.1 Channel Mini Wireless Hi-Fi Amplifier Board with TDA7498E Hi-Fi Chip, 160W×2+220W Home Amplifier, Supplier-Made, BT/USB/AUX Flexible Connectivity, Dual Expansion Ports, DC 15-36V, Easy Integration for DIY Home Speakers CustomizationHT21 Upgraded 2.1 Channel Mini Wireless Hi-Fi Amplifier Board with TDA7498E Hi-Fi Chip, 160W×2+220W Home Amplifier, Supplier-Made, BT/USB/AUX Flexible Connectivity, Dual Expansion Ports, DC 15-36V, Easy Integration for DIY Home Speakers Customization
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Introduction
HT21 Upgraded 2.1 Channel Mini Wireless Hi-Fi Amplifier Board is a home amplifier module designed for DIY home speaker projects. It uses a TDA7498E hi-fi chip to support clear, high-quality audio, helping you build or customize your own audio setup with a hi-fi focused amplifier board. For strong performance, this amplifier board delivers 160W×2+220W power. It also supports Bluetooth for wireless audio streaming, alongside flexible BT/USB/AUX connectivity to fit different ways you want to play music. The board includes dual expansion ports, giving you more options for integration and customization. Powered by DC 15-36V, it is intended for indoor use and is supplied in a box packaging type for straightforward handling when assembling your DIY speakers.
Question and answer
What amplifier board is HT21, and what is it used for? A:HT21 is an upgraded 2.1 channel mini wireless Hi-Fi amplifier board designed for DIY home speakers and indoor home audio amplification.
What output power does the HT21 mini amplifier board provide? A:The HT21 amplifier board is specified to deliver 160W×2+220W power for home audio performance.
Which hi-fi chip is used in this amplifier board? A:It is equipped with a TDA7498E hi-fi chip.
How can I connect audio sources to the HT21 board? A:The board supports Bluetooth for wireless streaming and provides flexible connectivity options via BT/USB/AUX.
Does it support DIY customization and expansion? A:Yes. It includes dual expansion ports to support flexible connectivity and DIY integration.
What input power range does the amplifier board use? A:The HT21 board uses a DC 15-36V power input range.
Safety & compliance
Seller info
Business name: Shenzhen Yixin Micro Technology Co Ltd
Business address: 1498, Block A, Block B, Baohua Building, No. 1016 Huaqiang North Road, Fuqiang Community, Huaqiang North Street, Shenzhen, Guangdong, China
-42%$24.99$42.99
$7.99 shipping on this order

HT21 Upgraded 2.1 Channel Mini Wireless Hi-Fi Amplifier Board with TDA7498E Hi-Fi Chip, 160W×2+220W Home Amplifier, Supplier-Made, BT/USB/AUX Flexible Connectivity, Dual Expansion Ports, DC 15-36V, Easy Integration for DIY Home Speakers Customization

4.5
(28)
352 sold
Specification:Default
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The round boardThe round board
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About this shop
YIXW
YIXW
4.3
2520 Sold
100%24h response rate
0%Ships within 2 days
82%Positive feedback
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Videos for this product
My $500 speaker is collecting dust now. This board + some drivers = all I need#amplifier #speaker #diyspeaker #bluetoothspeaker #fyp
NoteNebula
707
I built a speaker with this amp board, and it totally blows away speakers that cost hundreds of bucks.. #amp #speakerbluetooth #diyaudio #waterpipe #plumber
NoteNebula
472
Those garage speakers have been in retirement long enough. Time to put them back to work with the HT21 #amplifier #audiosetup #diyaudio #bluetoothaudio #dealsforyoudays
TheAmpBuilder
573
Bass so heavy my screen started doing backflips without even touching it #amplifier #subwoofer #eletronics #bluetoothspeaker #hifi
TheAmpBuilder
377
This tiny board sounds like a way more expensive setup, YX-HT21 is a beast #amplifier #bluetoothamp #diyaudio #audio #diy
NoteNebula
144
Unbelievable. I'm not even halfway up and it's already this insane #amplifier #subwoofer #bluetoothamplifier #bluetoothspeaker #ForYou
NoteNebula
190
I almost deafened myself testing this. Learn from my mistake and LOWER YOUR VOLUME #amplifier #bluetoothamplifier #bass #caraudio #fathersday
TheAmpBuilder
180
POV: You spent hundreds on a well-known brand,then your friend shows up with a homemade box that outclasses it #amplifier #diyspeaker #speaker #audioequipment #tiktokshop
TheAmpBuilder
101
The HT21 is basically CPR for the speakers your dad abandoned in the garage #amplifier #hifiaudio #musicspeaker #musiclovers #fyp
NoteNebula
118
Saturday project: PVC pipes, some screws, and an HT21. Sunday result: neighborhood shaking bass #amplifier #diyspeaker #audiosetup #homemadespeaker #dealsforyoudays
NoteNebula
90
Love building stuff? Stop overpaying for pre-made speakers. This barebones 2.1 board is your new best friend #amp #diyamplifier #diyspeaker #diybluetoothspeaker #diy
NoteNebula
100
First time I tested this amp, I thought my eardrums were done for #amplifier #homeaudio #subwoofer #audiogear #fathersday
TheAmpBuilder
169
Literal plumbing parts + HT21 = a speaker that hits harder than anything I've ever owned #amp #diyaudio #audiogear #audio #viral
NoteNebula
76
POV: You realize you can turn any wooden box into a Bluetooth speaker with the YX-HT21 #amplifier #diyspeaker #diybluetoothspeaker #diyaudio #diy
NoteNebula
87
This amp board makes your whole setup look like it's having a seizure #amp #hifiaudio #audiogear #bass #fyp
TheAmpBuilder
71
That 220W dedicated sub output is dangerously good. Bass heads, be warned #amplif #subwoofer #subwooferamplifier #audiogear #fyp
NoteNebula
91
My DIY build just humiliated a speaker that cost me hundreds. This board is unfair #amplifier #amp #subwoofer #audio #diy
NoteNebula
59
Warning: the HT21 might shake 10 years of dust right off those garage shelves #amplifier #wirelessaudio #audio #bluetoothaudio #ForYou
TheAmpBuilder
53
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