JBL Charge 2 Plus review: specs and price

There is a control panel on the device body, so you can easily access the volume control or remote without having to interact with a cable or another device it's connected to.

A speaker driver is an individual transducer that converts electrical energy to sound waves. More drivers may result in better sound quality.

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The driver unit is the component that produces sound in the device. Bigger drivers are more powerful and can produce better bass.

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Device is protected with extra seals to prevent failures due to any kind of weather.

When covered under the manufacturer’s warranty it is possible to get a replacement in the case of a malfunction.

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Audio output power is based on the number of speakers and their power in watts. High audio output power results in loud, clear sounds.

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The lowest frequency at which the device produces audio. The lower the low-frequency response, the stronger and juicier the bass.

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An amplifier is integrated into the device. An audio amplifier takes a small signal and makes it bigger without making any other changes in it which results in better sound, so any sound source can be connected to speakers.

Signal-to-noise ratio is a measure that compares the level of a desired signal (meaningful information) to the level of background noise (unwanted signal), the bigger the less perceived noise.

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These microphones are designed to filter out background noise from the desired sound. Especially useful in noisy environments.

A passive radiator looks like a normal driver (speaker) from the front, but on the backside all of its 'guts' are removed. Passive radiators allow woofers to produce deep tones that otherwise may not have been possible. They can have the same sonic output as larger speaker cabinets, but in a much smaller size.

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The battery can be recharged and used over again.

An indicator shows you when the device has low battery.

The time it takes to fully charge the battery.

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An auxiliary input allows you to play other audio sources by connecting them through a simple audio connection like a 3.5mm jack, i.e for MP3 or portable DVD/CD player.

With a standard mini jack socket, you can use the device with most headphones.

With more USB ports, you are able to connect more devices.

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A microphone port allows connecting external high-end or specialized microphones.

Wireless devices allow users more freedom of movement.