Fans of music or watching movies on the big screen of a home theater are undoubtedly interested in getting high-quality sound. Therefore, it is important which pre-amplifier to choose so that the result does not disappoint you, what characteristics to look for when choosing an audio device.
When listening to music on a CD player, an amplifier is also needed, because they have a very weak signal. An amplifier is connected to help the speakers. He is able to carry out switching and receive an audio signal, increasing it to the required volume.
Amplifiers are divided into three types: preliminary, integrated and power amplifiers. Integral, which combines everything in one case, is currently the most common. A more expensive and high-quality circuit is a separate device consisting of a power amplifier and a preamplifier. Amplifiers are tube, transistor.
It is the preliminary version that is capable of giving a real music lover the sound that he would like to hear - more pure and high-quality, truly lively.
Choosing from the category of expensive multi-channel digital systems, you can stay on the AV processor. And when choosing among amplifiers, it is better to give preference to the preamplifier, which is the best investment. The processor is able to properly adjust the parameters and processing of surround sound. As a result, you can assemble the following audio system, including a source (for example, a disc player), pre-amplifier, amplifier and acoustics. The source can be a turntable , cassette deck and other options. You can use an AV processor as a preamp. Pre-amplifiers are more effective in conjunction with digital audio systems in which they pair with power amplifiers. This allows the owner of professional acoustics to avoid music recordings when playing flaws and to neutralize the frequency resonances inherent in the room.
In order for the pre-amplifier for the subwoofer to produce the desired sound quality, it is necessary to set the center frequency closer to one kilohertz on its equalizer, and set the mid-frequency lower by half a decibel.
To adjust the sound on the preamplifier, you should output its output with a maximum, and at the input of a power amplifier with a minimum level. The sound will be better if the output impedance of the preamplifier is lower than the input impedance on the power amplifier. Stereo tube amplifiers and transistor power amplifiers are well combined. You can connect the preliminary version to the active speakers, but good sound can only be obtained using high-quality studio models.
As a rule, the preamplifier plays the role of a control controller that allows you to adjust the volume and timbre of the audio system, switches the sound sources and prepares a signal for the power amplifier. Unlike the latter, the preamplifier is visible.
If you choose a high-quality pre-amplifier, then this is a High End class technique, for example, Evolution, created by German designers. It achieves maximum neutrality by processing the input audio signal. The device has a perfect elemental base, a short signal path and a stabilized power source. The preamplifier has a mono output to a subwoofer with satellite consoles, a tuner and a universal phono preamplifier can be built into it. Undoubtedly, such a device can deliver a lot of pleasure to real music lovers.