SKU: 30149820710

HKM-713939 ZK-TB21 2.1 Channel Power Amplifier with NE5532 and TPA3116D2 Technology, Supports 2x50W + 100W Subwoofer, DC 12-24V

Sale price$71.99 Regular price$79.99
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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11

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Description

HKM-713939 ZK-TB21 2.1 Channel Power Amplifier with NE5532 and TPA3116D2 Technology, Supports 2x50W + 100W Subwoofer, DC 12-24VIntroducing the HKM 713939 ZK TB21 2. 1 Channel Power Amplifier, a smart choice for anyone looking to elevate their audio experience. Crafted for audiophiles, this amplifier utilizes advanced NE5532 and TPA3116D2 technology to deliver exceptional sound quality. With its impressive power output of 2x50W for the left and right channels paired with a powerful 100W for subwoofers, the ZK TB21 is designed to create an immersive auditory experience ideal

Introducing the HKM-713939 ZK-TB21 2.1 Channel Power Amplifier, a smart choice for anyone looking to elevate their audio experience. Crafted for audiophiles, this amplifier utilizes advanced NE5532 and TPA3116D2 technology to deliver exceptional sound quality. With its impressive power output of 2x50W for the left and right channels paired with a powerful 100W for subwoofers, the ZK-TB21 is designed to create an immersive auditory experience ideal for home theaters and music setups.

One of the standout features of the ZK-TB21 is its compatibility with a wide range of DC power supplies from 12V to 24V, making it versatile enough to suit various audio configurations. Additionally, the inclusion of Bluetooth 5.0 allows for seamless wireless streaming up to 10 meters away, granting you the freedom to connect your devices easily. The built-in anti-interference functions ensure your audio remains clear and true to the source, enhancing your listening experience.

Safety is a top priority with the ZK-TB21, which is equipped with multiple protective mechanisms to guard against overvoltage, undervoltage, overheating, DC detection, and short circuits. This ensures you can enjoy your audio without concerns about reliability or damage.

The amplifier's compact design, measuring 118x100x22mm (4.6x3.9x0.8 inches), makes it a fantastic option for spaces where size matters. Its adaptability to both 4 and 8-ohm speakers allows for a wide range of applications, enhancing its usability in different audio settings.

Enhance your sound system today with the HKM-713939 ZK-TB21 2.1 Channel Power Amplifier and experience the blend of quality and innovation tailored for sound enthusiasts.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 30149820710

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4.8 ★★★★★
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K
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Kaitlin Olewiler
Dallas, US
★★★★★ 5
Very good so far for fine hair
I can’t speak to its effectiveness on regrowth yet. However, it made my hair feel really soft and after washing it didn’t weigh it down. Also made it very shinny and helped with the winter static! My scalp also felt good! I will continue to use this. The smell is heavy coffee, but not bad! I use the artnaturals brand a lot. I have fine hair and a medium amount.
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Reviewed in the United States on February 2, 2026
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Verified Purchase
Jan B
Massapequa, US
★★★★★ 3
Smells strong
Package was delivered YESTERDAY. Haven't had time to evaluate the product. Only comment is the smell is pretty strong but dissipates within 15 minutes.
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Reviewed in the United States on June 3, 2026
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Verified Purchase
Violet Gray
Waukegan, US
★★★★★ 5
Overall effectiveness
It decreases the amount of breaking when combing my hair. 100% moistturizing my scalp and hair.
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Reviewed in the United States on May 21, 2026
S
Verified Purchase
Sonia Browne
Grantham, US
★★★★★ 5
love this
leaves my hair soft and smells nice. i have seen some growth since i began using
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Reviewed in the United States on May 19, 2026
K
Verified Purchase
Kenneth A. Hedgspeth
Dallas, US
★★★★★ 5
Great value
Lightweight great quality
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Reviewed in the United States on May 16, 2026

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