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๐ถ Power your space with precision and style โ donโt just listen, dominate the soundscape!
The Walfront ZK-TB21 is a high-power 2.1 channel Bluetooth digital amplifier board featuring a TPA3116D2 chip with AM interference suppression. It supports Bluetooth 5.0 with a 10-meter range, delivers up to 50W per stereo channel and 100W to the subwoofer, and operates on a 12-24V DC power supply. Designed for durability and safety, it includes multiple protection mechanisms and a compact form factor ideal for professional and DIY audio setups.
| ASIN | B08GZBJWFZ |
| Best Sellers Rank | #4,472 in Electronics ( See Top 100 in Electronics ) #2 in Home Audio Amplifiers |
| Brand | Walfront |
| Brand Name | Walfront |
| Country Of Origin | China |
| Customer Reviews | 4.1 out of 5 stars 118 Reviews |
| Included Components | inc |
| Manufacturer | Walfront |
| Material Type | Material |
| Maximum Output Power | 100W |
| Maximum Supply Voltage | 24 Volts (DC) |
| Maximum supply voltage | 24 Volts (DC) |
| Minimum Supply Voltage | 12 Volts (DC) |
| Minimum supply voltage | 12 Volts (DC) |
| Model | TB21 |
| Mounting Type | Surface Mount |
| Mounting type | Surface Mount |
| Number of Channels | 2 |
| Number of Items | 2 |
| Number of Packs | 2 |
| Output Power | 50 Watts |
| Package Type Name | Box" (meaning 'Box' in Spanish) |
| Part Number | TB21 |
| Specification Met | FCC |
| Supply Current | 5 Amps |
| Voltage | 24 Volts |
J**D
Best amplifier kit
I am happy ๐ these are the best items onbthis platform... really appreciate to the dealrs who are selling such nice products on Amazon. ๐๐ป
R**A
Low noise , no heat clear sounds .
I love this product . Only problem is mount in amplifier case .
M**A
Great product
Amazing thing
J**Z
Tiene muy buen sonido
Funciona muy bien, tiene potencia y excelente sonido, le conecte unas bocinas vintage de 8 ohms y un subwoofer con una fuente de 12v 3A, estรก funcionando perfecto.
N**N
Best bang for buck
Works really well for the price. Was hard to find a 2.1 amp with a powered sub connection since they all have LFE sub out and cost twice as much as this. Works perfectly, just need to keep the volume knob less than 50% otherwise I get lots of background static. But even at that level, its plenty loud, could be because I'm using 8ohm bookshelf speakers. I love the fact it has individual control for sub freq/vol and L/R treble/bass as well. All these features in an amp this cheap/small is impossible to find these days.
J**A
Fun and functional
Do it yourself assembly. Fun, and functional. Thanks!
R**V
Value for money
Works well. Worth the price tag. Can power upto 8 inch sub, frequency selection is roughly 30hz at minimum. Make sure to use a proper 19v or 24v power supply for the grunt. Noise from interference is there a little, more prominent when you dial the volume knob to max. But that's expected from bareboan amp boards like this. Make a proper chassis and ground it and we should be sorted with noise then. Choose soft tweeters has the treble can get harsh if dialled up. Mids and bass sounds slightly damped. But overall thisnis a great amp for small bookshelf and desktop speakers. Not sure about durability, which only time and usage style, care and luck will tell. Cheers!
M**E
The Best Amplifier for the Price but tainted by Amazon's Quality Control...
This Amplifier is a GOAT. Although Sub Frequencies below 20hz aren't there much, it's not an issue as I don't use it for DJ music but more EDM and Pop songs, and Rock. It Can Comfortably drive some overload with my 70 watt RMS Soundbird Full range drivers and a 150 Watt RMS Subwoofer with no issues. Though it may get hot with speakers over 50 watts of Load and below 4 ohms. But it's very good. The reason I gave it Four Stars is that the First delivery was horrible, with Broken parts, Missing accessories and damaged cover plates. Amazon, Please make your Quality Control in check.
Trustpilot
3 weeks ago
3 weeks ago