Catalog   /   Sound & Hi-Fi   /   Portable Audio   /   Radios & Table Clocks

Comparison REAL-EL X-545 vs REAL-EL X-703

Add to comparison
REAL-EL X-545
REAL-EL X-703
REAL-EL X-545REAL-EL X-703
Outdated ProductOutdated Product
TOP sellers
Bluetooth 5.0.
Device typeradioradio
Specs
Tuner typeanalogueanalogue
Radio
FM
AM
SW
FM
AM
SW
Playback
USB-A
card reader
line input
Bluetooth v 5.0
USB-A
card reader
line input
Speaker power3 W8 W
General
Power source
cordless
cordless
Battery capacity1200 mAh1500 mAh
Radio charging connectormicroUSBmicroUSB
Materialplasticplastic
Size230x147x110 mm260x98x180 mm
Weight840 g1000 g
Color
Added to E-Catalogapril 2023march 2023
Compare REAL-EL X-545 and X-703
REAL-EL X-545 often compared
REAL-EL X-703 often compared
Glossary

Playback

Bluetooth. Wireless technology for transmitting sound from mobile phones, tablets, etc. Allows you to connect a device wirelessly at a short distance from the signal source. The quality and overall capabilities of Bluetooth depend on its version:

— Bluetooth 4. Each version brings improvements over the previous one. In version 4.0, three standards were effectively combined: traditional Bluetooth, high-speed channel, and energy-saving mode for small amounts of data. This allowed for optimized channel use and battery consumption. Version 4.1 enhanced resistance to interference when working near 4G LTE modules. Version 4.2 mainly introduced general improvements in speed and security.

— Bluetooth 5.0. One of the most important innovations of the Bluetooth 5.0 standard was the expansion of BLE ("Bluetooth Low Energy") capabilities: if necessary, the device can increase range by reducing speed, or speed up transmission by reducing range. Moreover, several improvements related to simultaneous operation with multiple connected devices were introduced.

— Bluetooth 5.1. A significant upgrade in version 5.1 was the ability to precisely position the signal transmitter (receiver). Whereas previous versions could only determine distance, version 5.1 can also determine direction. This improved navigation function, which enhanced the operation of smart home systems, connected device search, etc. Additionally, improvements a...gain touched on energy consumption savings and simultaneous operation with multiple connected devices.

— Bluetooth 5.2. The next update after 5.1 in the Bluetooth 5 generation. The main innovations in this version were several security improvements, additional energy consumption optimization in LE mode, and a new audio signal format for synchronizing parallel playback on multiple devices.

— Bluetooth 5.3. The Bluetooth v 5.3 wireless communication protocol was introduced at the beginning of 2022. Innovations sped up the channel negotiation process between the controller and the device, implemented a quick switch function between low-duty cycle and high-speed mode, improved bandwidth and connection stability by reducing susceptibility to interference. In the event of unexpected interference in Low Energy mode, the channel selection procedure for switching was accelerated. The 5.3 protocol does not present fundamental innovations, but a number of qualitative improvements are apparent.

— Bluetooth 5.4. Introduced at the start of 2023, this version increased the range and data exchange speed. Also, improvements were made to the BLE energy-saving mode in Bluetooth v 5.4. This protocol uses new security features to protect data from unauthorized access, offers increased connection reliability by selecting the best communication channel, and prevents connection losses due to interference.

USB-A. The presence of a USB-A port allows connecting USB drives, mobile phones, MP3 players, and other similar peripherals. Accordingly, such models have a built-in player and allow connected gadgets to be used solely as storage devices.

Card Reader. Like the above-mentioned USB-A, this item implies the presence of a built-in player. And a card reader allows using memory cards as storage on which songs will be recorded.

Line Input. An input for transmitting sound in analog format. Through such an input, you can connect an external signal source — for example, an MP3 player — to a radio receiver and listen to music through the receiver's speakers. Despite the development of digital standards, the line input remains one of the most popular connection interfaces.

Speaker power

The maximum power output of the receiver speaker(s) in normal operation, without overload. The higher the rated power, the higher the sound volume, but louder devices and energy require more.

Battery capacity

Theoretically, a higher capacity allows for greater autonomy, but in practice, operating time also depends on power consumption - and it can be very different, depending on the characteristics and design features.