Comparison Xiaomi Mi Portable Bluetooth Speaker 16W vs Xiaomi Mi Outdoor Bluetooth Speaker

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

Bluetooth 4. Each version brings improvements over the previous one. For instance, version 4.0 integrated three standards: traditional Bluetooth, high-speed channel, and a power-saving mode for small data volumes. This optimized channel usage and battery consumption. In version 4.1, interference resistance was enhanced near 4G LTE modules. Version 4.2 mainly offered overall improvements in speed and security.

Bluetooth 5.0. One of the most significant innovations of the Bluetooth 5.0 standard was the expansion of the BLE ("Bluetooth Low Energy") mode capabilities: when necessary, the device can increase range by reducing speed, or speed up transmission by reducing range. Additionally, several enhancements were made for simultaneous operation with multiple connected devices.

— Bluetooth 5.1. A substantial upgrade in version 5.1 was the ability for precise positioning of the signal transmitter (receiver). While previous versions could only determine distance, version 5.1 can also determine direction. This improved navigation functionality, enhancing smart home systems, locatin...g connected devices, etc. Additionally, improvements again addressed power-saving 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 a range of security enhancements, additional power 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 speeded up the channel agreement process between the controller and the device, implemented fast switching between low duty cycle and high-speed mode, improved bandwidth and connection stability by reducing susceptibility to interference. In case of unexpected interference in Low Energy mode, the channel selection procedure for switching is now faster. The 5.3 protocol does not present fundamental innovations, but several qualitative improvements are evident.

— Bluetooth 5.4. Introduced in early 2023, the version increased the range and data exchange speed. Also, Bluetooth v 5.4 enhanced the BLE power-saving mode. This protocol uses new security features to protect data from unauthorized access, has increased connection reliability by selecting the best channel for communication, and prevents connection losses due to interference.

— Mini-Jack (3.5 mm). Standard Aux audio input for connecting speakers to an audio signal source — for example, a laptop or smartphone.

— USB. Presence of a USB port allows connecting USB flash drives, mobile phones, MP3 players, and other similar peripherals to portable speakers. Therefore, such models have a built-in player and enable using connected gadgets solely as storage devices.

— Card reader. Like the above-described USB, this feature implies the presence of a built-in player in the speaker system. A card reader allows using memory cards as storage where songs can be recorded.

— FM receiver. An integrated tuner, allowing the speaker system to function as a full-fledged FM radio receiver — this range is popular among music radio stations (particularly due to the ability to broadcast sound in stereo format).

— Mono. The simplest type of acoustics is a single-channel audio system equipped with one speaker. Of course, there is no question of any volume of sound.

— Stereo. Acoustic system equipped with two speakers responsible for the left and right channels. Allows you to create a minimal illusion of "surround" sound by simulating the displacement of the sound source in the space in front of the listener.

— 2.1. A system of two stereo speakers that create a minimal illusion of "surround" sound, and a subwoofer that provides powerful and rich sound at low and ultra-low frequencies.

The presence of a passive radiator in the design of the speaker system.

Such an emitter is a speaker cone that does not have its own coil and magnet — in other words, it does not produce sound itself, but only vibrates from the sound of other speakers. Like the phase inverter (see above), this part is intended to improve sound pressure and sound depth, especially at low frequencies; at the same time, the advantage of a passive radiator is the absence of a tube, due to which the design is simpler and more compact than with a phase inverter.

The total power of all channels of the speaker system. The higher the power, the larger the size of the room in which the audio system can be used, however, more powerful portable speakers usually have larger dimensions and weight.

The range of audio frequencies reproduced by the audio system. The wider the range, the richer the sound, the more details the speakers can convey, especially in the low and high frequencies. At the same time, we note that the average human ear is able to hear sounds in the range of about 16 – 20,000 Hz, and it makes no sense to provide a wider range in speakers — a person simply will not hear it. Also note that a wide frequency range alone does not guarantee good sound quality.

The model supports the ability to synchronize the operation of several speakers connected to one signal source. This solution allows you to realize truly stereo sound, improve the quality and power of sound reproduction, and also expand the stereo panorama. The only thing is that both speakers must support the appropriate connection type. Different brands may have their own technologies for combining speakers (JBL Connect, JBL PartyBoost, Sony Party Chain), or maybe a universal TWS.

— Microphone for speakerphone. The ability to use portable speakers as a speakerphone system for conversations on a paired mobile phone. In this mode, the speakers connect to the device via Bluetooth, and the speech is transmitted to the interlocutor using the built-in microphone. The voice of the subscriber on the other end of the line is output not to the speaker of the phone, but directly through the speakers of the speaker system. This is often much more convenient than holding the phone close to the ear, or in situations when your hands are busy. In addition, speakerphone can be very useful if several people need to participate in the conversation.

— NFC chip. NFC is a short-range wireless communication technology (about 10 cm). It allows for many different uses, but in portable speakers it is usually used as an addition to Bluetooth, making it easier to set up a communication. For example, a smartphone with an NFC module can simply be brought to a speaker with the same function — and both devices will automatically recognize each other, and the user will only need to confirm the communication.

— Multipoint. The technology used in Bluetooth models allows the speaker to connect to several devices simultaneously. Thanks to this, you can, for example, listen to music from a laptop, and when a call comes in on your mobile phone, switch the speakers to a c...onversation. Different manufacturers have their own features of this technology, and therefore, if the multipoint function is critical for you, you should separately clarify the details of its operation in the selected model.

— Bass Boost. A function that provides amplification of low frequencies — for powerful and rich bass. Often implemented as a single button, with which you can actually "turn the bass on and off." Bass Boost is more convenient than adjusting low frequencies using an equalizer; in addition, various special technologies can be used to enhance bass.

— Mobile application. The ability to operate the functions and settings of portable sound system through a mobile application for a smartphone or tablet. The device usually communicates with gadgets via the Bluetooth wireless protocol. The proprietary software may include tools for flexible sound adjustment (equalizer, bass boost, etc.), wireless communication management, sound source selection, etc. Also, the ability to update the firmware of portable sound system is often implemented through a mobile application.

— Light effects. Such effects can be different — from the simplest set of lights flashing at a constant frequency to advanced color music systems that produce multi-colored patterns in time with the music being played. In any case, this function has more of an entertaining meaning and does not affect the sound of the device in any way.

Operating time of a portable audio system without connecting to an external power source (network or USB port, depending on the capabilities). Note that manufacturers tend to indicate battery life in their specifications under optimal conditions for energy saving: at low volume, without using additional functions, etc. Therefore, in fact, this indicator may be noticeably lower than the claimed one, and speakers with a long operating time will not sound at full volume for the specified hours.

The time it takes to charge a fully discharged device to 100% charge.