It turned out that everything is not so simple, most of the reviews were about devices intended for installation in a car, and, the saddest thing, with negative reviews, but there seemed to be a certain number of comments mentioning a good TPA3116 amplifier, so I started look for something based on it.
So the hero of today's review: 
Two-channel Breeze Audio amplifier based on the TPA3116 chip.
Body: Milled aluminium, 90mm wide, 35mm high, 120mm deep.
Controls: power switch and volume control
Connectors: input through 2 tulips, output through contact barrels with screw fastening.
Power: 12-24V, 5.4mm jack
So what came out of all this. 
Well, first of all, the body. Looks pretty good. Made of milled aluminium, smooth sanded and has a nice matte finish. The inscriptions are applied neatly and, most importantly, rather modest, without Chinese show off. Compared to the native amplifier of my speakers, this box is simply miniature, and out of habit, I can’t believe that it is capable of something. On the front of the case there is a strict metal toggle switch, a small (and, most importantly, not very bright) LED indicating operation, and a volume control potentiometer with a metal handle. The front and rear panels are bolted to the chassis with flush-mounted hex head screws: neat and tidy.
The power supply is not included in the kit, the seller offers for $ 8 to put some kind of 12V power supply, I don’t know what power. I refused this generous offer, fortunately I found an old adapter from Thinkpad "and also manufactured by IBM in the box.
As for the sound connection, the input is made with classic tulips, but, of course, they saved a little on the output contacts. Not a specialist in the types of connectors, but they are screws drilled from the side at an angle of 90 degrees, into which the wires from the speakers are inserted and pressed against the top with wing nuts. In theory, spring terminals do not take up much more space, they are not much more expensive, and it is much more convenient to use them: it is easier to insert a wire, not even tinned, and it is more difficult to short two contacts with a randomly protruding “tail”. (It was explained below in the comments that it is not necessary to press the wire with nuts, but to buy banana connectors and connect through them. Like this is Hi-Fi and much better terminals. =)
Opened the case to see what's inside. It looks neat enough, the soldering is normal, although the flux is not washed. But I didn’t take off the radiator to see the chip marking, you can throw tomatoes at me, I was too lazy. So let's believe the Chinese that there is a beautiful TPA3116D2.
And, finally, the most important thing, what does he have with sound? Here is where it gets more difficult. I really like it too. Sounds much better than the native Microlab amplifier (at least the way I remember it). The bass is rich, enough for me, the mids are well defined. The scene is legible enough, there is depth. In order to listen at medium volume in a small room, everything is enough. But here you need to understand that I'm not an audiophile, I don't understand the intricacies of gold wires, but I'm testing the sound quality on mp3 playback =)
The main thing to note: this box does not make noise during a pause, does not wheeze on saturated compositions, adjusts the volume smoothly through the channels and without cod. And the fact that lamps do not stick out of it, that it does not heat up like an A-class iron, and a goblin with it, it works out its own and okay.
On this I will probably end this short review, thank you all for your attention.
I plan to buy +31 Add to favorites Liked the review +39 +72Good afternoon, dear readers. Finally, I was ripe for a review of the amplifier, for the workplace at the computer, which I had already done a few months ago.
background
I wanted a compact amplifier on TPA3116 like this. Only with built-in power supply and FM radio. Having studied the offers in various Chinese stores, I didn’t find anything for myself, either I don’t like it, or it’s expensive. It was decided to blind himself. The idea was this - the device works like a regular amplifier, with the ability to switch to FM radio mode.
Complete set
Every device needs a case. At first I wanted to collect everything in a purchased plastic case, but I wanted it beautifully. I decided to use the case of the existing satellite tuner. The donor was an old satellite receiver Orton 4100C
The following board was chosen as an amplifier (photo of the seller): 
Now the seller is selling boards made of green textolite, I got a yellow one: 
Bought for my own, delivery to Ukraine 22 days by China post. It was sealed in an antistatic bag and wrapped in a bubble wrap on top.
Dimensions: 
Specifications:
Class D
Working voltage: DC 8 - 25V
Working current: 4.5 - 7.5A
Output power when powered DC 24V 4Ohm 50W + 50W
Operating frequency: 20Hz to 20KHz
Current and overheat protection
The amplifier is assembled on a TPA3116D2 chip - datasheet
There will be no testing of the audio path, there are enough tests of this microcircuit in the network.
As an FM radio, the well-known MP3 module will work, it was bought 
The complete set is standard - the module itself, wiring and remote control.
All this stuff will be fed by a folk power supply DC2412, bought 
Brief characteristics:
Input voltage - 85-265 V
Output voltage - 24 V
Load current - 4-6 A
Output power - 100 W (maximum)
Dimensions - 107x57x30mm
Well, connectors for connection: 
Bought and
Assembly
There was an idea to make the most of the native front panel of the receiver, with minimal modifications. The control buttons will also be used native. In the receiver inside, on the front panel, there is such a board (the microphones have already been soldered out): 
A board was made from PCB according to the original size, an MP3 module and mics for control were fixed in it (the original board became the donor of the mics): 
The MP3 module board had to be shortened a little (it rested on the last mic), soldered USB and mini jack connectors, an SD card slot, as well as buttons (I soldered the mic to the contacts where the buttons were)
The task was to make the display of the module shine through the translucent plastic of the front panel. This is how it looks in the case ("Amplifier" and "Radio" modes, respectively): 
I didn’t like the volume knob that came with the amplifier at all, Ali sells others prettier, but I don’t like the prices either. As a result, he carved a new handle out of aluminum: 
Under it, a hole was cut in the front panel of the case: 
From the beginning, the plans were to power the MP3 module from the main power supply, through a DC-DC converter (the module needs 5V). In the process, it turned out that with such a connection a small background appears in the speakers. This option did not suit me, so I assembled a simple transformer power supply with a stabilizer on the LM7805: 
I decided to remove all terminals and connectors from the power supply and amplifier board, soldered the wires directly. The power supply is isolated from the case, mounted on plastic racks. Antenna wire from the FM radio brought to the rear panel to the mini jack connector. This is what it looks like inside: 
The rear panel had to be almost completely replaced, since there was almost no body left on the native after dismantling the receiver connectors: 
Front view: 
The large button on the front panel switches between the "radio" or "amplifier" modes, the small ones in the "radio" mode switch stations. Unforgettable that there is also an IR remote control.
I liked the sound, there is enough power (speakers S-30).
This is such a cute project. Thank you for your attention!
The design of this D-class sound amplifier was created for the experiment (I have long wanted to listen and evaluate the new class D), in addition, I just needed a new audio amplifier to replace the old one for the computer. It was decided to buy 2 ready-made bridge amplifier modules in class D called TPA3118 (as well as the microcircuit that is installed in them). They cost 150 rubles each and theoretically give out a power of 60 watts mono. If you wish, you can assemble a similar UMZCH from scratch on separate radio components -.
TPA3118 module bought on Ali Specifications
- Chip TPA3116
- Working voltage: 8 - 24 V
- Operating current: up to 7.5 A
- Standby current: 40mA
- Input level: 0.3 - 6.3 V
- Output power: (12V 4Ω 25W + 25W) and (21V 4Ω 50W + 50W)
- Operating frequency: 20Hz - 20kHz
- Current and overheat protection
- Board dimensions: 100x60x25 mm
TPA3116 class D amplifier circuit
Circuit diagram of TPA3116 amplifier With a unipolar supply of 12 V - the output power is about 10 W, at 24 V - about 30 W (at 8 Ohm AC).
Power - ULF distortion, graph Judging by the distortion graphs, you shouldn’t swing it much, up to 20 W and that’s it. Further Knee sharply climbs up.
Block board TPA3116, TPA3118, TPA3130 Despite the modest size of the board and the lack of heatsinks, which is unusual for an audio assembler, this kid plays very loudly. The assembly itself took a couple of hours - after all, you don’t really need to do anything, just solder the wires from the connectors and the power supply. But try to do everything as efficiently as possible so that you do not have to disassemble and redo it later. These UMZCH modules are most often powered by switching power supplies, which whistle and make noise along the circuit. Therefore, install additional capacity filters that will eliminate these effects.
Note the additional TIP-142 power filter transistor. It was supposed to get a little warm, so the transistor is bolted to the case. In reality, he is cold. An additional advantage is that the voltage rises gradually through this filter, after switching on in a short time.
In general, in terms of power supply, one more 50V / 6800uF capacitor per channel was installed in front of the modules. The TPA3116 boards are mounted vertically with grommets. If you want a good end result, find a good knob for the volume control and good audio jacks. Power is external, also comes through the socket.
Results of the work and results
The amplifier kit on the table near the computer looks very stylish and convenient because you can connect different speaker systems to it - it calmly pumps even 100-watt speakers (of course, not to the fullest). The voltage is supplied from the 19 V laptop power supply and there is complete silence in the speakers.
The bass amplifier is assembled on a TPA3116D2 chip.
Specifications.
Power into a load of 4 ohms. at U pet. 21B. – 2 x 50W. (BTL), 100W. (PBT)
Input signal level. - 0.8 ... 2V.
Signal to noise ratio. - 102 dB
Harmonic coefficient at half power 25W. - 0.1%
Supply voltage - 4.5 V ... 26 V.
The circuit allows you to turn on the microcircuit in two modes:
1. Bridge BTL. In this inclusion, you can get 2 channels of 50 watts.
2. Parallel-bridge (PBTL). Since in this mode two BTL channels are also connected in parallel, then at the output we get one channel with doubled power - 100 watts.
The diagrams below show all the necessary changes for both modes.
1. Preparing the board for operation in bridged mode. Stereo 50W.
The assembled amplifier operates in bridge mode. But if you are signaling it on an unbalanced line, install jumpers P7 and P12. No more jumpers need to be installed.
2. Preparing the board for operation in parallel-bridge mode. One channel 100W.
Install jumpers P14, P15 and connect the jumper outputs of the amplifier P3 to P4 and P8 to P11.
Your amplifier will now be in parallel-bridge mode and output 100 watts. Connect a loudspeaker to P6 and P8. Apply the signal to the input of the right channel.
By selecting resistors R5 and R8, you can select the gain level and input impedance, as well as switch the amplifier to master or slave modes
The amplifier has a very high efficiency > 90%, so it is not very demanding on heat dissipation. As a radiator, you can use, for example, this one. The shape, mounting holes and dimensions, which are made specifically for this module. In addition, it has a gold coating, which looks very attractive.
Radiator
This is an open project! The license under which it is distributed -
A great solution for assembling an amplifier with your own hands!
Are available
Buy in bulkThe kit is cheaper
The amplifier module allows you to implement the principle: bought - connected. This low-frequency amplifier has the minimum: the coefficient of non-linear distortion, the level of intrinsic noise and a wide range of supply voltages and load resistances. The areas of application of this ULF are extremely diverse. ULF can be used both in the car and outdoors, for various events, and at home as part of your musical audio complex.
Specifications
Peculiarities
- Wide range of supply voltage 5V-24V.
- Protection against exceeding the temperature of the microcircuit case.
- Load short circuit protection
- High conversion frequency of 400 kHz-1.2 MHz, which allows you to get a high-quality signal without the use of bulky filters to clean up the PWM.
- High efficiency over 90%
- Possibility to connect to the line input without preamplifiers and matching circuits.
- The use of closed loop provides an excellent level of noise suppression from power supplies.
- The board has a volume control and tone controls for high and low frequencies.
Principle of operation
The module is based on the TPA3116 D-class audio chip. Chip drivers are bridging. Thus, 50W of output power per channel is achieved with low intermodulation interference and low distortion. Due to the high efficiency of the microcircuit, more than 90%, massive radiators and active cooling systems are not required. The board has a volume control and tone controls for high and low frequencies, which makes the amplifier more convenient to use.
Functions
- Enhances speech or music in the audio range 20-22000 Hz.
Device operating modes
- Class D
Articles
Contents of delivery
- MP3116mini module - 1 pc. PCS.
- Instruction - 1 pc. PCS.
What is required for assembly
- soldering iron
- shielded wire
- Side cutters
Preparation for operation
- Connect acoustics.
- Apply 5-24V power to the module, observing the polarity.
- Touch the pins of the line input with the tweezers. A faint background should be heard in the speakers.
- Verification completed. Happy operation.
Operating conditions
- -40…+85 deg.С
- Humidity up to 95% non-condensing.
Precautionary measures
- Do not exceed the maximum supply voltage of the module.
- Do not reverse the polarity of the power connection.
- Failure to comply with these requirements will result in module failure.
Questions and answers
- on the ti.com website they write that the TPA3116 chip does not break down to 30V. Is the 24V power supply limitation of the amplifier due to some other elements?
- The Datasheet writes 26V http://www.ti.com/lit/ds/symlink/tpa3130d2.pdf
- Is it fastened in the body with nuts on the regulators or is there some other way?
- That's right, nuts. If the regulators are removed, then with hot glue.
- Hello! Which case fits this amp?
- There is no special case for this device. Universal, taking into account the placement of the power source, you can pick up here https://website/shop/cases
- You need a low-power woofer with a volume control. balance and timbre. with the ability to connect headphones. because I have poor hearing and one ear hears worse.
- We do not have such low power headphone amplifiers.
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