Review on 🔊 Stereo Bluetooth Power Amplifier Board by PEMENOL - 12V 24V 30W 40W Mini Amp Receiver Module with Infrared Remote Control for DIY Speakers/Car Bluetooth Devices by Michelle Langley

This is a good 50w stereo amplifier for electronics DIY enthusiasts. At only $12.99 (current price when I bought it) it's a bargain. This is a great amp for dipping your toes into DIY electronics, and you get a lot more bang for your buck building something yourself rather than buying something off the shelf. The best part is that you can learn more about how everyday products like an audio player work by working on it and customizing it yourself. For $13, you can't go wrong if you get your hands wet in the world of electronics. I found the amp to do what the instructions say pretty well. It's pretty easy to use and easy to learn how it works. The best part is there is NO SOLDERING. If you don't like soldering or can't solder, this product is perfect for you as you simply screw the speaker wires into the output terminals. Here are my pros and cons of this product: Pros: Very cheap price - this could make a great stocking or gift for any electronics or speaker lover. This product is small, very light and very easy to use. The input voltage range is very wide, allowing you to use a variety of input voltages from 12 to 24 volts. . This wide voltage range is well within the normal output voltage ranges you might have with power supplies just lying around. Because the input voltage range is so wide, you probably don't need to buy a separate power supply for this product, and the car battery will provide the correct voltage. The product supports micro SD cards and USB flash drives as audio inputs. These are both great features as almost everyone probably has either a USB flash drive or a micro SD card or even both. With support for up to 64GB, you could potentially burn hours of music onto your drive. The product supports next song skipping, previous song skipping and includes volume control with buttons. Again, no soldering is required, making it very easy to set up and use for almost anyone. It doesn't have any crazy settings to get lost in and a 12-year-old who has a bit of a knack for things and electronics could easily set it up and use it. Now for the cons: the product doesn't remember the last volume settings after turning it off. In fact, it always runs at full volume by default. If you unplug the power cord and plug it back in, the device will play at full volume. This can be quite intimidating and annoying when large speakers are connected to the device and it instantly turns on at full volume when you turn it on, enough to wake the dead. No headphone jack or line jack. The lack of a cord in the outlet makes it a little less convenient to use. If there was a headphone jack, you could just plug your phone directly into the amp and play music from your phone. There is no on/off switch or switch on the device. Without a switch, you have to physically turn off the device, for example by unplugging it to turn it off. While this would be normal when using the product in a vehicle (e.g. your ignition keys control power), it may be impractical when using the product outside of a vehicle. When using a conventional power supply, a slight noise can be heard. (The product could filter out noise a bit better), but if you're using a battery, the hiss should go away. Overall I would give the product 3.6 stars (I gave 4 stars because it's the roundest. Not holding the volume setting when turned off is the reason for one star's removal. The other 0.3 stars are for no line in the Plug and 0 1 stars for hiss (due to electronic noise not filtered well) and no power button Conclusion: Almost everything about the product is great and I can live without a headphone jack or power button and even the hiss is fine since it can be solved by using a battery instead of a power bank but not storing a custom volume setting and roaring at full volume the moment the device is turned on or off should be fixed.The product can either keep the volume set by the user or operated at low volume every time it is plugged in. In summary, this is a good pro Product with a lot of potential, but not maintained Changing the volume settings can cause problems in practice. Expression. Imagine turning on your car keys late at night and your car speakers are on full blast, waking up your neighbors and startling you? The volume problem should be resolved. Once the volume issue is resolved this will be a great product. However, this is a great product for experimenting and learning about electronics. You can watch my video review for more information and see for yourself how the product works. Thank you!