Cozychord HT21-II 2.1 Channel Bluetooth 5.1 Amp Board, TWS, 160W x 2 + 220W by Cozychord - Used condition

Cozychord HT21-II 2.1 Channel Bluetooth 5.1 Amp Board, TWS, 160W x 2 + 220W — Open-Box, 15% Off

Name: Cozychord HT21-II 2.1 Channel Bluetooth 5.1 Amp Board, TWS, 160W x 2 + 220W
Brand: Cozychord
SKU: awhd-us-b0h2112nvh
Price: 32.37 USD
Availability: InStock

Brand: Cozychord

Condition: Used - VeryGood

$32³⁷

$37⁹⁹

-15% Save $5⁶²

Updated: 9 days ago

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Description

POWERFUL 2.1 CHANNEL AMPLIFIER BOARD – Build a complete stereo and subwoofer system with up to 160W × 2 left/right output plus 220W dedicated subwoofer output. Designed for 4–8Ω speakers and DC 15–36V power, this Bluetooth amplifier board is ideal for DIY speakers, bookshelf speakers, desktop audio, home stereo systems, and custom 2.1 audio projects. TWS WIRELESS STEREO PAIRING – Pair two identical HT21-II amplifier boards through TWS to create a wider left/right wireless stereo soundstage. Ideal for DIY wireless speakers, home stereo systems, bookshelf speaker setups, and custom audio projects when you want to expand beyond a single Bluetooth amplifier board. MULTIPLE AUDIO INPUTS & IR REMOTE CONTROL – Enjoy flexible connectivity with Bluetooth 5.1, 3.5mm AUX-IN, USB music playback, and FM radio. The included IR remote provides convenient control from your listening position, while dedicated Subwoofer, Left, and Right speaker outputs make it easy to build a complete 2.1 channel speaker system. 5-KNOB TREBLE, BASS & SUBWOOFER CONTROL – Fine-tune your sound with independent Subwoofer Frequency, Subwoofer Volume, Treble, Bass, and Main Volume controls. Easily adjust deep bass, high-frequency detail, and overall output to match different speakers, rooms, music styles, movies, gaming setups, and DIY audio systems. ENGINEERED FOR STABLE, RELIABLE PERFORMANCE – Built around the TDA7498ETR Class-D amplifier platform, the HT21-II combines copper-wound inductors, large filtering capacitors, an aluminum heatsink, and active fan cooling for stable operation. Reverse-polarity, undervoltage, overheat, overcurrent, and short-circuit protection provide added security for long-term DIY and home audio use. Product Parameter:
CHIP:TDA7498E
BT Version : 5.1 (No shielding, 49 FEET)
Channel : 2.1(R & L+ Subwoofer)
INPUT MODE:Bluetooth / AUX / USB/FM Flash Drives
Adaptive power supply :DC 15~36 V (Under voltage protection below 9V, and 12V power supply can also be supported)
Adapter Speaker :30-200W 4-8Ω

Protection Mechanism :
Anti reverse connection, undervoltage, overheating, overcurrent, short circuit protection.

Package include:
SZM-HT21 II Bluetooth power amplifier board*1 Screwdriver*1
DC connector*1
shell*2
Note: You need to install the shell by yourself, rest assured, it is very simple!

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Product Details

SKU:: awhd-us-b0h2112nvh
Model:: SZM-HT21 II
Country:: US
ASIN:: B0H2112NVH

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Common questions about buying open-box and refurbished.

Why buy refurbished or open-box?

Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $6 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.

What's the difference between open-box and refurbished?

Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.

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