The company is known as a thermos brand, but it seems that the speaker this time also uses an enclosure with a "vacuum double structure" that has an excellent sound insulation effect. Normally, the vibration of the speaker unit transmitted to the enclosure causes noise, but the product is said to realize clear sound with less noise by taking advantage of the vacuum characteristic that "does not transmit vibration". I got the real thing late this time, so I would like to review it.
There are two types of lineup, monaural type and stereotype, and this time we used stereotype black. The cylindrical form is like a small water bottle only for thermos. Generally, there is a method of making the speaker heavier in order to prevent the enclosure from vibrating, but the above-mentioned vacuum technology has realized a surprisingly light weight of about 160 g per speaker. It's easy to carry the two together, and it seems to be useful not only for everyday settings but also for travel and leisure (although it is not waterproof).
The speaker can be fixed diagonally by turning the stand under the main unit upside down. The angle at which the sound comes toward your ears when you just sit down, but if you want, you can adjust it at any angle you like.
Speakers are connected to each other with a cable, and no other wiring is required. One operation button doubles as a power ON / OFF and a pairing button with a Bluetooth-equipped device, and the connection status can be known by blinking the LED or operating sound.
◆ Vocals emerge clearly!
When I immediately played songs such as rock, jazz, and pop from my smartphone, the one that made the most difference was "vocals."
When you listen to it in the equilateral triangle formed by your head and speakers, the vocals stand out clearly, and you are surrounded by a three-dimensional voice that makes you feel as if you were singing in front of you. However, on the other hand, the bottom sound is far away, so it may not be suitable if you want to listen with an emphasis on playing an instrument.
◆ Let's enjoy the luxurious "one person space"
Of course, you can use it in a place where you can listen to it with a large number of people, but the comfort of the "vacuum sound" that echoes straight toward you seems to be the biggest attraction. Also, since it is not a bass reflex type, it has the advantage that it is not affected much even if there are things around it, so it is also good when you want to use it in a small space such as on a desk or a hotel on a business trip. Since people's voices can be heard clearly, it is also recommended for radio and English conversation lessons.
The size of the speaker alone is W52 x D61 x H94 mm, and there are four color variations: black, white, red, and blue. The continuous playback time is about 6 hours for stereotypes. Includes cloth pouch and USB charging cable. The over-the-counter price is around 10,000 yen for the monaural type and around 18,000 yen for the stereotype. I feel that the cost performance is a little weaker than products with similar functions, but it may be worth considering if the applications such as the novelty of the vacuum structure and portability match.