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Comparison Pioneer DEH-S520BT vs Pioneer DEH-X8700BT

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Pioneer DEH-S520BT
Pioneer DEH-X8700BT
Pioneer DEH-S520BTPioneer DEH-X8700BT
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Application areacarcar
DIN size1DIN1DIN
Front panel
detachable
detachable
Media types
CD
USB storage (front)
iPod/iPhone connection
Android connection
CD
USB storage (front)
iPod/iPhone connection
Android connection
FLAC support
Equipment
Multimedia
Bluetooth
Bluetooth
Equalizer
Number of bands135
High Pass Filter (HPF)
Low Pass Filter (LPF)
Bass Boost function
Amplifier specs
Power per channel50 W50 W
Number of channels44
Control
Volume controlknob control
Control functions
steering wheel controls
steering wheel controls
Outputs
Speaker connectionISO/RCAISO/RCA
Line out33
Other outputshigh voltage output
Inputs
front AUX
More features
Tuner bandsFM/AМ
FM/AМ /24 stations/
Fast charge
Illumination colour selection
BacklightRGBRGB
Added to E-Catalogoctober 2019december 2014

Number of bands

The number of bands in the radio equalizer.

In this case, the band means a separate part of the frequency range, the volume of which can be adjusted using the equalizer independently of the other parts. The more bands the equalizer has, the more accurately it allows you to adjust the overall sound of the car radio acoustics. However, note that multi-band equalizers are quite difficult to set up, therefore they are recommended primarily for experienced users.

Volume control

The type of volume control provided in the radio. Rotary knobs, sensors or mechanical buttons are most often used in this role; Here is a more detailed description of each of these options.

— Rotary regulator. The traditional regulator in the form of a round knob, which does not lose popularity nowadays — in fact, it is he who is installed in most modern car radios. Such prevalence, among other things, is due to the fact that the rotary knob is compatible with both digital and analogue volume control circuits — which means that it can be used in devices of any level, from top-end to the most simple and inexpensive. In addition, such a regulator stands out noticeably on the radio panel, so you can even find and turn it by touch, without being distracted once again from the road. The disadvantages of rotary knobs include perhaps some bulkiness compared to buttons and sensors, but this moment is extremely rarely significant.

— Mechanical buttons. Traditional mechanical buttons — more precisely, most often one double-sided rocker button, vertical or horizontal. Unlike the rotary knobs described above, they can only be used with digital volume control circuits; therefore, most radio tape recorders with buttons are advanced devices with extensive functionality and a size of at least 2DIN (or a screen of at least 5 ", for standard models). In such cases, the advant...age of buttons over rotary controls is that the rocker can be made very narrow and install even on a very thin screen frame, while the handle requires a fairly wide additional panel. And if you compare this option with sensors, then mechanical buttons are somewhat cheaper, and you can control them blindly without taking your eyes off the road to the radio panel. On the other hand, the mechanics tend to wear out with use, making it less reliable, and many users simply don't like buttons more than sensors, and for these reasons, and a few others, this option is relatively rare.

— Touch buttons. Controls in the form of sensors that are triggered not by pressing, but by touch. Like mechanical buttons (see above), this control is only compatible with digital volume control and is mainly used in advanced radios with large screens. At the same time, the sensors give the device the most advanced and “technological” appearance, attractive to many users from a purely aesthetic side. The main disadvantage of this option is that the touch buttons usually do not protrude from the panel — so it is almost impossible to find the right sensor blindly, and when controlling the radio, you inevitably have to be distracted from the road. However, with more or less decent driving skills and due care, this moment is not a serious drawback, so this type of control in high-end radio tape recorders is used much more often than traditional buttons.

Other outputs

Additional outputs provided in the design of the radio and not related to those described above. These can be, in particular, such interfaces:

— Coaxial. Digital output for audio transmission (including multi-channel) via RCA cable, electric version of S/P-DIF interface. Do not confuse this standard with analogue RCA (see "Connecting speakers"): firstly, it uses a digital data transmission format; secondly, the entire signal is transmitted over one cable; thirdly, conventional RCA cables for coaxial connection are poorly suited, it is desirable to have shielded ones. Unlike optical S/P-DIF, this variant is subject to some degree of electrical interference; on the other hand, it does not require special care when handling the wire.

— Optical. A variation of S/P-DIF that uses a TOSLINK fibre optic cable to transmit the signal. Like the coaxial version described above, it supports multi-channel audio. At the same time, optical fibre, on the one hand, is completely immune to electrical interference, on the other hand, it requires rather delicate handling (in particular, it does not tolerate sharp bends).

— On the regular display. Output for connecting one or another regular display. This can be a screen that is originally installed on the dashboard of a car, or a monitor purchased separately; specific models of compatible screens should be specified in the documentation for the radio.

— High voltage. Speaker output with increased op...erating voltage of 4V instead of the traditional 2V. This improves the signal-to-noise ratio and improves the overall sound quality. On the other hand, connecting speakers to such an output can be associated with additional difficulties.

Fast charge

The function of accelerated charging of external devices - for example, smartphones - from the USB port of the radio. The general principle of this procedure is that increased power is supplied to the gadget; but its specific features may be different. For example, some models provide a separate USB port intended only for fast charging, while others use the same connector to which flash drives are connected. In addition, the radio may support special fast charging technologies; they speed up the process even more, but only work with compatible devices; for other gadgets, accelerated charging may not be available at all. It doesn’t hurt to clarify all these nuances before purchasing.
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