Portable Acoustics Hopestar P21, 10W, black Review

Portable acoustics - an audio system that you can carry with you. Can work both from a network, and from the accumulator. Modern modules can play audio from external media (flash cards, disks, SD cards). When choosing products, you should pay attention to some important technical characteristics that will help determine whether the product is of high quality. Number of speaker strips To achieve high sound quality, you can use several output strips, each of which will be responsible for a specific frequency. Today there are single, two-lane and three-lane models. The former reproduce music on one universal speaker, the latter completely separate high, low and moderate frequencies, which allows increasing the purity of the sound. Maximum FrequencyWide bandwidth for natural sound. Even if you are playing a high quality media file, a narrow bandwidth can ruin everything. The average values ​​are usually from 10 to 55 thousand Hz. Signal/Noise It is known that if you turn off the speakers without playing audio, you can hear background noise from the amplifier. It is impossible to completely get rid of this, however, high-quality devices minimize noise performance, so the average parameters are in the range from 45 to 100 dB. Connected devicesToday, most users store information on their own media: cards, mobile devices. It is very important that the device has enough ports to connect such equipment. Modern models can work with Android smartphones, Apple technology, as well as all popular types of flash cards. There are also advanced devices that can be connected wirelessly. EMI protectionIt is important that the device does not react with noise to extra waves, such as when a phone rings or a radio plays nearby. Sustainability...