In our reviews of acoustics that can be used with iPhone, we tested devices of different classes. They were mainly intended for home use. Today we will meet a representative of a well-known brand Logitech. The Z50 speaker is a compact acoustics designed mainly for office use. The main advantage of the Z50 is its simplicity … The column is somewhat similar to a mug. Outside, it has no volume control or other settings. One single speaker pointing up. It reproduces the mixed sound from the left and right channels. 
One wire for power connection, the other for signal. That's all. But if you just need to listen to something from an iphone or a computer, then no more. The Z50 copes with this perfectly, you don't expect such a volume from this baby. 
In addition, the sound is not only audible but also visible. Even at low volumes, you can see how the speaker membrane moves. This speaker arrangement has its own plus. In case you need to lower the volume, just cover the speaker with your hand. And if you bring your palm from the side, you can adjust the direction of the sound. In general, in the Z50 you can use, in the literal sense of the word, manual configuration 🙂
Specifications Logitech Multimedia Speaker Z50
Connection type (audio input) Analog stereo (3.5 mm) Power – 5 W Cone size – 6 cm Frequency range – 100 Hz to 18 kHz Cable length (speakers) – 0.8 m Cable length (power / charge) – 1 , 8 m 
The column is very compact and takes up space on the table no more than a simple mug, at the same time it stands out from the office environment with its unusual design. Of course, you can't advise the Z50 for audiophiles. But these inexpensive acoustics are perfect for the office, where sound quality is not in the first place. Full information about the Logitech Multimedia Speaker Z50 can be found on the manufacturer's website.