Everyone, even more or less knowledgeable in the field of sound equipment, people know that the amplifier is considered an important part of the audio system. Without using this technique, it will not be possible to achieve full-fledged powerful sounding equipment. In this article, we will take a closer look at the main characteristics and principles of operation of integrated amplifiers.
What it is?
An integrated amplifier is a device that includes a preamplifier, a distributor, and the sound power amplifier itself. All this is assembled in a single building. The device is designed to amplify the full sound signal that comes from the source. The integrated amplifier switches the mechanisms, adjusts the sound volume level and controls the entire process of transmitting the audio signal. Next, get acquainted with the basic principles of this model.
Principle of operation
A device such as an integrated amplifier is used to convert the shape and magnitude of the voltage. It is also possible to turn an analog signal into a pulse signal for the purpose of further processing by a digital unit.
The physical data and the specifics of the operation of the microcircuits of this amplifier will be more clear during reproduction using separate elements and circuits.
The use of integrated circuits can improve the data of manufactured devices, reduce energy consumption, increase operating capabilities. Given all the qualities of such an amplifier, it is possible to apply it in all areas. Integrated devices come with a built-in and with a remote power supply and are divided into classes - A, B, AB, C, D.
Depending on the elements used, sound amplifiers are divided into several types. Consider each type in more detail.
These models are created by the principle of operation of radio tubes. They serve as an element that enhances sound. This option cannot provide high power, but at the same time it produces a warmer sound of medium and high frequencies. Thanks to this, the technique is more attractive to connoisseurs of quality music, even despite the fact that difficulties may arise with the quick selection of the right acoustics.
A circuit model of this kind includes the use of transistors as a device for amplification. They turn out to be more practical and allow to give out high power in comparison with the previous type. Ideal for playing music, mainly with low frequencies. Bass model transistor type are clear and rich.
In these types of devices, both lamps and transistors are simultaneously used to enhance sound power. Combining the best properties of both technologies, the perfect combination is obtained.
Correctly planned and well-made mixed models are universal.
They perfectly cope with playing musical works of different directions, regardless of the prevalence of the frequency range. All amplifiers, depending on the number of channels, are of 3 types.
- Mono Amplifiers. This technique is designed to amplify one channel. It is mainly present in high-end equipment or in subwoofers for bass processing.
- Stereo amplifiers. A two-channel version intended for use in a stereo system.
- Multichannel. This type of amplifier is necessary for receiving surround sound.
The number of amplifier channels when choosing a technique depends on the composition of a particular speaker system. The three-channel and five-channel versions are less common than others. Six-channel models are mainly produced to provide home theater sound reinforcement. But there are types with a large number of channels.
The main rule when choosing equipment is the correspondence of the number of channels to the number of columns . More specifically, each column should have its own personal channel. You should choose an amplifier after acquiring a certain acoustics, since the power of the device should be 1.5-2 times higher than the system itself.
Rating of the best models
After reviewing the main characteristics of amplification technology, you can go to a review of the best models at the moment in terms of price and quality.
Marantz PM- KI Pearl Lite
This model has a powerful sound amplifier and is more suitable for experienced users. This technique is equipped with a liquid crystal display, additional controls, high-quality lighting equipment.
The device looks very stylish and will be combined with any interior. The amplifier has a high-quality assembly and an additional copper coating.
There is a large number of controllers that an inexperienced user may well handle.
- power parameters;
- sound coordination;
- high quality assembly.
The disadvantage is the simple model of the control panel.
This option is no worse than the previous one. It has a very high quality, assertive, dynamic, but at the same time soft sound. Therefore, listening to music is pleasant even in intensive mode. Given the excellent sound quality, the bass is heard at a high level.
- the possibility of detailing the sound;
- excellent activation of acoustics;
- active sound;
- output efficiency.
The disadvantage is the high cost of the amplifier.
Unison Research UNICO Secondo
The model of this manufacturer is considered the best in the category of tubes. A technique with detailed sound that is soft, suitable for listening to classical music. The device with conveniently located controls looks great.
Using the supplied remote control, you can configure any parameters, including bass.
- clear sound output;
- high performance data;
- simple adjustment and connection;
- ideal parameters.
The disadvantage is producer price policy.
Onkyo RA - MC 5501
Due to its high characteristics, this amplifier is in the TOP of similar devices. This model is more suitable for large home theaters. The technique produces an assertive sound that can be controlled. The high quality of the device justifies the expensive price.
- high sound quality;
- purity of sound;
- high performance data;
- reliability of operation;
- system consisting of 9 channels.
The disadvantage is the high price.
Denon PMA-720 AE
This technique falls in love with impeccable sound quality. The indicator lights and controller are located on the front panel. It is controlled by remote control. According to users, the device produces luxurious bass. This is explained by the fact that before starting work, the amplifier should be warmed up. This will take about 15 minutes. After this procedure, the sound will be perfect, pleasing to the hearing of each listener.
- balance of price and quality data;
- high production capacity;
- ease in the management process;
- juicy bass.
The disadvantage is prolonged heating.
NAD C275 BEE
This model is optimal to use for stereo sound. Its peculiarity is that the device is able to bind 4 channel streams to 2. It also stands out with excellent power data and can detail the sound.
Compared to peers, users like it in small sizes, even though the power supply is inside the device. The maximum power of the model is 95 watts.
- compact size;
- excellent power characteristics;
- impeccable bass;
- built-in power supply.
The disadvantage is heating.
This amplifier is considered one of the best when you need to amplify the sound of the headphones. It has the ability to tune bass and behaves well when used together with players. Optimal connection to the linear output. It has small dimensions, which makes it possible to carry in your pocket without experiencing discomfort.
- budget price;
- harmonization rate of 0.004 percent;
- small sizes.
The disadvantage is a rather weak battery.
Fiio e 18
This device is ideal for use with portable gadgets. The amplifier will act as a conductor between the headset and the phone.
- quality characteristics of reproduction;
- performing battery options;
- small dimensions;
- the ability to connect to different devices.
No flaws were identified.
The device has high power. Its rich sound will appeal to all music lovers.
This is ideal for fans of hard rock and similar styles.
- sound output;
- dynamic data;
- excellent swinging acoustics.
The disadvantage is the high cost.
Fiio E12 Mont Blanc
This amplifier is needed for a headset. It differs from analogues in the presence of connectors, has a small size. It can be easily connected to a tablet, smartphone and other similar devices. But in the case of a laptop or computer, there will not be much effect. There are no indicators and speakers on the model, but there is a deep reproduction.
- optimal power data;
- small dimensions;
- great sound;
- the presence of detail sound at the output;
- can serve as a charging device.
There are no shortcomings.
Before purchasing an integrated amplifier, it is worth considering some aspects, such as: calculating the finance for the purchase, the requirement of the future owner, the reliability of the manufacturer, and more.
How to choose?
An amplifier is a necessary part of the speaker system, providing source selection and signal level adjustment. Almost every modern professional audio system comes with a pass-through output, which is used when connecting subwoofers and satellites. It is necessary to specifically decide in favor of a particular device taking into account needs. Consider the basic rules.
- Do not buy too cheap models, as it is unlikely in this case it will be possible to get the desired quality.
- It is necessary to acquire such sophisticated equipment at a point of sale with the possibility of verification, preferably having previously decided on a specific model.
- The amplifier should be selected taking into account the power reserve, so that in the future it does not operate at maximum capabilities, in order to avoid reducing the reliability of the device. For example, a model with a maximum power of 100 W will provide long-term and high-quality operation, only having a power of about half that.
- Be sure to consider the area of the room in which the sound equipment will work. The approximate power of each channel should be 3-5 watts per square meter. If the footage is up to 15 square meters. m, then you need to take into account the first figure, and with areas exceeding 20 square meters. m is the second indicator.
- It is preferable to choose a technique in which the acoustics are connected not with spring clips, but with threaded terminals. Such a mount will be more reliable, indicating the technical characteristics and the device belongs to the Hi-Fi class.
Given all the characteristics and capabilities of a particular amplifier, a specific choice is left to the future user.
About what integrated amplifiers are, see below.