iRobot S9+. S9+ is the most advanced robot vacuum cleaner from the American brand of robot vacuum cleaners – iRobot. The product comes with a dock that automatically collects garbage in the body. Users therefore only need to empty trash and dust from the dock instead of having to clean the drawer on the robot as often as with conventional products. The product uses the AllergenLock technology trash bag designed specifically for the S9+ to filter allergens such as pollen and mold. Half square and half circle machine, dual omnidirectional brush set, technology that is exclusive to iRobot, recently appeared on Ecovacs T9 AIVI series. Most of the latest technology on robot vacuums is available on the S9+, such as redrawing diagrams with a laser sensor using the vSLAM algorithm; identify obstacles, objects that cause obstacles, entanglement in the course of running; control via smartphone and map selection. Ecovacs Deebot T9 AIVI (13.5 million VND) T9 AIVI is Ecovac’s first robot line to integrate the Aeroforce dual-action rubber brush system shared from iRobot. As a result, the product has a higher suction efficiency, even with large garbage objects or stains sticking to the floor surface. This is also the top model with high suction power today, 3,000 PA, 300 ml garbage box capacity, 240 ml water box for cleaning, 5,200 mAh battery capacity. Compared with high-end robot lines, T9 AIVI has the most significant advantage of a vibrating cleaning system and an electric water regulating valve. The software on the machine also allows storing many different maps, suitable for multi-storey houses. Roborock S7 (12 million VND) Roborock S7. S6 Max proved “short of breath” compared to products from Ecovacs, Roborock has launched S7 with many technologies no less than the competition. The most significant upgrade is the Sonic Mopping water damper vibration mopping system that can vibrate 3,000 times per minute. The new wiping mechanism is significantly more effective than the old S6 Max series. However, the suction power of the machine is only kept at 2,500 PA and there is no dual rubber brush system like iRobot or Ecovacs. The S7 has a camera system that detects objects such as wires, socks, and baby items so that the device does not get entangled or entangled when operating. This camera can also be viewed directly from the phone. Neato Bootvac D7 (19 million VND) Neato Bootvac D7. Bootvac D7 from Neato has many similarities with iRobot S9+ in terms of half square, half round design. The company explains that this design helps to limit the omission of dirt in the corner. This is also a recognizable difference with most of the remaining robot models on the capital market, which are circular in shape. The machine also has a navigation system, laser map redraw, save multiple maps and select a cleaning area. Largest trash can capacity in the segment – 700 ml. However, the suction power of the machine is poor compared to competitors at 1,600 PA. Without the dual rubber brooms like Ecovacs or iRobot, the D7 has a broom that’s almost twice as long. The machine can also be controlled remotely via the application, schedule cleaning, create virtual walls …

The Aria K2 936 is a special, limited production, unique version of the Focal that comes equipped with all four K2Power drivers with the iconic “gold” driver. Currently, out of Focal’s entire range of products, with the exception of the Spectral, the 40th anniversary limited production speaker and discontinued production, only the Aria K2 936 is favorably equipped with the famous Aramid K2Power membrane horn speaker. With the advantage of super-fast, stable movement, providing outstanding mobility. To increase the “special”, Focal also put on the Aria K2 936 speaker cabinet with a premium paint coating in smoky gray, the color that represents high-performance supercars. Due to the more complex finishing requirements, this smoky gray color was previously unique to the Utopia III EVO flagship speaker line. Flax diaphragm horn loudspeakers are replaced with Focal’s special legacy – aramid fiber K2Power Driver The exterior design of the Aria K2 936 remains the same as the standard 936 model, the only difference is that all the old Flax technology drivers are replaced by the eye-catching bright yellow aramid membrane driver. If the Flax driver made of flax fiber has the advantages of rustic color, good escapement, the K2Power driver is highly appreciated for its ability to reproduce details and especially high dynamics, allowing sound performance. Optimized for any type of music. The Focal Aria K2 936 features a 6.5in K2 mid driver combined with 3 woofers with a large voice-coil design, the same material and diaphragm diameter as the mid. This K2Power driver detail has a sandwich structure sandwiched between 2 layers of aramid fiber membrane, fiberglass membrane and foam in the middle. With the advantage of stiffness, extremely low film resonance (due to being absorbed by foam), and extremely light, the K2Power driver with this golden color feature is able to reproduce extremely high details and does not add any “color”. does compared with the original signal. Tweeter TNF 1in ultra-light concave membrane The TNF tweeter has been used by Focal in many recent loudspeaker designs, which is a high-performance driver design and has the best smoothness available today in the mid-high range. This driver has a concave dome membrane structure, a combination of aluminum and magnesium. Recessed dome diaphragm allows for coil design with a smaller diameter than conventional dome diaphragm, reducing overall weight and increasing flexibility. In addition, the use of poron edging material also helps the TNF tweeter driver reduce distortion in the 2 to 3kHz frequency range, which is very sensitive to human ears. Dynamic impressively with well-balanced sound standards To assume that the Aria K2 936 is a purely upgraded version is not entirely correct. In addition to the unique K2Power driver technology, Focal had to make a lot of adjustments in the crossover and it was clear that the pair of speakers had an impressive change in performance quality. Focal Aira K2 936 received the award for audio equipment of the year 2020-2021 from Stereo + magazine The special impression of the Focal Aria K2 936 is the outstanding dynamics, we can even compare the mid-range control, bass range and response speed of these two speakers with models of double-price column speakers. money. Fast, clean and free of excess sound, delivering a crisp and speedy stage experience, these two elements make the Aria K2 936 listeners feel like they are experiencing a pair of large, driver-packed column loudspeakers. The very nice point of the Aria K2 936 is that, although the dynamic increases significantly, the sound is not “stiff” or roughened, but still retains a good balance of bands. Of course, in terms of timbre, the speakers will tend to reproduce the structure of details accurately, so the rustic and sweet colors will be reduced. This advantage helps Focal Aria K2 936 to take on the role of any genre of music. And the “quality” of devices such as sound sources and amplifiers will be more accurately specified by the speakers. Epilogue Designed and engineered in France, the Akira K2 936 is an extremely impressive pair of column loudspeakers with two perks: owning a unique K2Power driver and painted in smoky gray with a premium finish on the top speaker line. Utopia III EVO board. These speakers aim for a modern hi-end sound philosophy, which is faithfully reproducing all genres of music with low noise, pushing performance levels beyond. In particular, these are also ideal speakers for hi-end movie rooms thanks to the advantage of reproducing 3 balanced bands with high dynamic range.