Most drivers love their cars and try to make them as comfortable and unique as possible. One of the areas of customization is the installation of high-quality car acoustics. Often, the amplifier built into the radio is not enough to confidently “rock” powerful speakers. In this case, you have to install a separate external amplifying unit. This review is dedicated to just such equipment - the rather well-known Pioneer GM-D1004. This amplifier is appreciated by many lovers of high-quality sound due to its pleasant sound and ease of installation. After reviewing the main characteristics, as well as reviews of real users, we can conclude that it is advisable to purchase this device in your car.
Purpose
First of all, before installing such an amplifier, you should think about how high-quality the head radio is in the car. If the sound source will give out a bad signal, poor in frequency, thenthe amplifier will not be able to truly show its capabilities. That is why it is recommended to use processor radios of the same brand with it.
The second requirement is the presence of powerful acoustics with a good frequency range. If standard speakers are installed, then the amplifier built into the radio will be quite enough for them. If the acoustics are powerful, but unbalanced, then the sound as a result will turn out to be flat and unpleasant, devoid of saturation.
As a result, we can conclude that the Pioneer GM-D1004 amplifier is designed for installation in cars that are already equipped with a high-quality sound source and a good speaker system of the required power.
Key Features
Up to four speakers can be connected to this amplifying unit simultaneously, each of which will have a power of no more than 100 watts and an impedance of 2 or 4 ohms. It can work in bridged mode. In this case, it is possible to connect to the Pioneer GM-D1004 a standard stereo system of two 4-ohm speakers with a power of not more than 200 watts each.
Classic RCA connectors are provided for input signal. This suggests that not only a radio tape recorder, but also any other device that has a linear audio output can be used as a sound source.
Very inspiring frequency response. The Pioneer GM-D1004 amplifier is capable of reproducing frequencies in the range from 10 Hertz to 40 kHz,which completely covers the entire frequency range audible to the human ear. At the same time, the distortion coefficient is less than 0.05 units, that is, it is practically equal to zero. Noises are expressed only in a slight hiss of the speakers in standby mode, which is completely imperceptible during the playback of music tracks. The maximum current consumption corresponds to the characteristics of the Pioneer GM-D1004 car amplifier with respect to the maximum power of the amplifier and is equal to 15 A.
Ease of use
The first distinguishing feature of the amplifier in question is its very compact size. Its sides are 181 x 38 x 64 mm. To visualize these dimensions, it is enough to recall an ordinary building brick. The amplifier turns out to be approximately two times smaller in width. This will allow you to mount the device almost anywhere under the dashboard of your car.
The second nice feature is the presence of an input signal sensor. The amplifier does not need to be turned on and off separately, it will automatically activate if an audio signal is detected at the input. Thus, it is excellent for concealed installation, since access to it is not required during operation.
Positive feedback about the gadget
In order to clearly understand the characteristics presented in the article, you can read the reviews of the Pioneer GM-D1004. Many of them note the following positive aspects of the device:
- Opportunityconnecting an amplifier using a standard bus without making changes to the wiring. This allows you to install it in cars without violating the terms of warranty service.
- Minimalist design. The amplifier is very compact and has no controls, which allows you to covertly install it in any suitable niche under the panel.
- Real declared capacity. The characteristics of the amplifier are not overstated, and even at maximum load the sound is not distorted, which indicates a sufficient supply of unused resources.
- Improve the sound signal. The built-in basic filters of the Pioneer GM-D1004 acoustics are able to smooth out some of the frequency balance imperfections that can occur at the sound source level.
- Elaborate cooling. Due to the fact that the elements are arranged as rationally as possible, the amplifier does not overheat even during long continuous operation in summer heat. This feature can be useful for those who enjoy listening to music while enjoying the outdoors.
Negative sides of the amplifier
Despite a fairly good list of positives, users were able to find some disadvantages. The main one is the difference in power between the amplifier of a standard head unit and an external unit is only two times. Therefore, it may not be practical to install it in some cases.
Another negative feature, some consider the lack of a built-in equalizer that could be adjusted to suit your acousticsystem. However, if desired, you can achieve the desired effect by adjusting the head unit. That is why the priority is to install a processor radio with fine tuning of the output signal.
Conclusion
This amplifier is perfect for those who want to get high-quality sound of their favorite tracks in the car, but do not want to interfere too much with the wiring. Pioneer GM-D1004 can be connected using a classic ISO connector without soldering wires and other complex manipulations. The compact size will allow you to find a place for it even in a small car, and the ability to connect any devices can generally save you from installing a radio, replacing it with a smartphone with a high-quality audio path or a good player.
