UwayKey ZK-TB21 Bluetooth Amplifier Board 2.1 Channel 50W Plus 50W Plus 100W Power Output Class D AMP Module with Dual TPA3116D2 Chip
Why you'll like it
- High-Fidelity Power Output — Dual TPA3116D2 chips deliver 50W stereo channels and a 100W subwoofer channel for room-filling sound quality.
- Advanced Wireless Connectivity — Bluetooth 5.0 technology provides a reliable transmission range up to 49 feet alongside a 3.5mm auxiliary input.
- Comprehensive Tone Customization — Independent physical knobs allow precise control over master volume, treble, bass, and subwoofer frequency.
- Robust Circuit Safety — Integrated protection mechanisms guard against overheat, reverse connection, short circuits, and voltage fluctuations.
Product details
Description
Transform your audio projects with the UwayKey ZK-TB21 Bluetooth Amplifier Board, engineered for superior sound reproduction and versatile connectivity. Powered by dual TPA3116D2 high-fidelity chips, this 2.1 channel Class D amplifier delivers robust audio output with 50W for the left and right stereo channels alongside a dedicated 100W subwoofer output.
Designed for audio enthusiasts and DIY speaker builders, it features advanced Bluetooth 5.0 wireless streaming for extended range and stability, plus a traditional 3.5mm auxiliary input for wired audio sources. Take complete command of your acoustic profile using the integrated control knobs for master volume, subwoofer volume, subwoofer frequency, treble, and bass adjustment.
Built-in multi-layer circuit protections safeguard the unit against overheating, overvoltage, undervoltage, and short circuits, ensuring reliable, continuous performance for home theater systems, custom desktop speakers, and garage audio setups.
How to use
- Connect compatible 4 to 8 ohm speakers to the left, right, and subwoofer terminal blocks.
- Attach a suitable DC 12V to 24V power supply matching your speaker configuration.
- Power on the module, pair your audio source via Bluetooth or plug into the 3.5mm auxiliary port, and adjust the onboard control knobs to achieve your preferred sound balance.
Ingredients
Not applicable for this electronic component product category.
As printed by the brand. Check the pack label if you have an allergy.
Specifications
| Brand | UwayKey |
|---|---|
| Ships from | USA (sourced directly), checked in Navi Mumbai |
| Sold by | Dropy.in |
Ratings & reviews
From our customers
Top reviews first: highest rated, with photos first
- Sneha D.5 ★
packing thodi weak hoti pan product ekdum top
box thoda dablayla hota alela baghun bhiti vatli ki atla board kharab na zala asel, pan lucky chalu kelya var perfect chaltoy. tyacha 3.5mm aux ani bluetooth connectivity mule mala phone connect karayla khoop sope padle, majhe juna passive speakers parat use madhe ale.
- Rohan M.5 ★
Works great for DIY speakers
Picked this up to build a custom desktop audio setup for my room. Connected it to a decent power supply and a passive subwoofer. The bluetooth 5.0 connects instantly without any dropouts, and the rotary knobs let me tweak the treble and bass nicely depending on what song is playing.
- Amit K.5 ★
mast sound aahe
mi kay divsaapasun ek chota audio board shodhat hoto majhya purana speakers sathi ani he net var baghun magvla, tpa3116d2 chips mule sound khupach clean yetoy ani base pan barobar adjust hotay, wiring thodi sambhalun karavi lagte pan output ekdum heavy bhetla mala.
- Deepak S.4 ★
badiya board hai par power supply dhyan se lagana
mera friend bol raha tha ki ye class d amp budget me best hai garage ke speakers ke liye, toh maine bhi le liya. bluetooth range achi hai aur 100w subwoofer output kaafi tezi se bass deta hai. bas ek choti cheez yeh hai ki weak adapter mat lagana warna full volume pe cut maarne lagta hai, proper dc supply chahiye isko.
FAQs
What are the full specifications of the ZK-TB21 amplifier?
The ZK-TB21 is a 2.1 channel Class D audio amplifier featuring dual TPA3116D2 chips, Bluetooth 5.0, and 3.5mm AUX inputs. It operates on a DC voltage range of 12V to 24V and delivers an output power of 50W for both the left and right channels plus 100W for the subwoofer.
What power supply voltage should be used with this amplifier board?
The board operates on a DC voltage input ranging from 12V to 24V. Matching the power supply to your speaker specifications is recommended, utilizing higher voltage and amperage adapters to reach maximum output capacity safely.
Can I use both Bluetooth and AUX inputs simultaneously?
No, you should ensure that Bluetooth is disconnected when utilizing the physical 3.5mm auxiliary line-in port to prevent audio signal interference.
Are the electronics sold on Dropy authentic USA imports?
Yes, Dropy sources all items directly from the United States to ensure our customers receive genuine, authentic products.
What protection features are built into the ZK-TB21 board?
The amplifier module includes built-in safeguards against overheat, overvoltage, undervoltage, and short-circuit issues to protect your hardware during extended use.
How long will delivery take?
Most orders arrive in 15–20 days: we source each product directly from the USA, check it at our Navi Mumbai warehouse and pack it on video. Items marked Dropy Express ship from our India warehouse and arrive in 3–5 days.
Is cash on delivery available?
Full cash on delivery is available all over India on Dropy Express items. For other orders from ₹2,499 to ₹15,000 you can use Partial COD: pay 25% online now and the rest in cash on delivery.
Are your products genuine?
Yes. Every product is 100% authentic, sourced directly from the USA, quality-checked and packed on video at our Navi Mumbai warehouse.
What if my order arrives damaged or wrong?
Write to us at [email protected] as soon as it arrives. Damaged, wrong or not as described, our Buyer Protection gives you a full refund. The details are in our Return, Refund & Cancellation Policy.
Is delivery free?
Delivery is free on orders from ₹1,499. Below that a ₹79 delivery fee applies.