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Amplifier Chip: TDA2050.
Number of channels: one channel
Input voltage: DC/AC 5-24V.
Output power: 5W-120W.
Output impedance: 4-16Ω.
Size: 60 x 35 mm x 40 mm.
Note:
1. It's not suitable for mobile phone sound sources and truck power sources (the power can not exceed 24V 500MA and above), otherwise the sound quality is not good.
2. The positive and negative poles of the circuit must be connected correctly, otherwise the board may be damaged.
3. The power supply cannot be overloaded, otherwise it may damage or burn out the amplifier board.
Package includes:
2 x TDA2050 Mono Audio Amplifier Module
Ufkelufkefifkehafke
July 17, 2025
The quality of the sound is poor.
Carl E. Berg
July 2, 2025
this amplifier works great in my homebrew ham receiver to step up the audio output from headphones level to speaker level. As noted in another review, the audio input polarity is wrong and the amp still worked but with a hiss in the background. I switched plus and minus and hiss greatly reduced. the audio out polarity and dc volts polarity were correct as shown in the pictures. I removed the volume control and replaced it with a panel mounted better quality 50k pot.
Jimmy
April 12, 2025
The TDA2050 is able to provide up to 35 W true RMS power into a 4 ohm load at THD = 0%, VS = ±18 V, f = 1 kHz and up to 32 W into an 8 ohm load at THD = 10%, VS = ±22 V, f = 1 kHz.The TDA2050 has a supply voltage range of ±4.5 to ±25 volts.The TDA2050 is a monolithic integrated circuit that is designed to be used as a class AB audio amplifier. It is known for its high power capability and low harmonic and crossover distortion. Some of its power capabilities include:35 W true RMS power: Into a 4 ohm load at THD = 0%, VS = ±18 V, f = 1 kHz32 W: Into an 8 ohm load at THD = 10%, VS = ±22 V, f = 1 kHz50 W music power: Into a 4 ohm load over 1 sec at VS = 22.5 V, f = 1 kHz
S. Marshall
January 29, 2025
I used one of these as a linear solid state power amplifier. Depending on how hot the input is, you may have to add significant impedance to prevent overload which may cause nasty distortion above 65% on the volume pot. I measured 44KΩ impedance before working my way up to an extra 3MΩ above that to manage the overloading coming from my guitar amp modeler at 100% output.Another thing to mention is the power rating. If you look up the TDA2050 chip datasheet, you will see that the max RMS wattage is ~32W with a somewhat reasonable THD. It is highly unlikely that you will see anything above this without unacceptable audio quality. 120W peak is highly unlikely and realistically the description for this product should include RMS if it is going to list peak wattage in the title. That is a little misleading.Lastly, I assume the schematic (simple as it is) isn't listed or available for competitive reasons. That is a bummer.
Capn._Tripz
January 27, 2025
These came in and are nice amps. Heavy circuit boarded and all the parts lied out nicely. However, they came with no connection or any paperwork on how to assemble them. These are small units with no room for a lot of text. They are useless with no schematic.
Jay
November 12, 2024
Repurposed a bass speaker, that was being fed from a line level source from a surround sound system that wanted a powered subwoofer. This did the trick, and allowed me to individually set the bass level as well. Took off the cover, drilled a hole, fed the switch through, put on a nice cap, and fed it power from an old laptop power supply.
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