A pressurized coffee machine for making espresso.

What is variable pressure technology: at any time to achieve the specified pressure value, and can remain stable, again changed to the specified pressure value can remain the same, is the real variable pressure. If it is only an uncontrollable or unstable variable pressure during the extraction process, it is not a mature variable pressure technology (for example, the pressure of the pull rod machine is uncontrollable and constantly changing from beginning to end, or the vibration pump of Yangchun machine, the pressure is also constantly changing). These uncontrollable parts can not improve the quality of extraction.

Synesso is the founder of pressure swing, and the pressure and time of the extraction process can be set arbitrarily, such as 3bar pre-soaking for 5 seconds, and then 6bar extraction for 5 seconds. Then enter the standard pressure 9bar to extract for 15 seconds, and then return to 5bar extraction for 10 seconds or even 30 seconds in order to prevent over-extraction. Because the low-pressure extraction can be used in the post-extraction stage, the traditional 30-second extraction can be perfectly broken, and there can be no bitterness in the extraction for one minute.

Non-variable pressure version of Cyncra, with pre-soaking function, can arbitrarily control the pre-soaking time. For example, pre-soak 3bar and then do 9bar standard pressure extraction. Many brands of machines have pre-immersion features, such as the GS3 and even the low-end hand-controlled E61 model. But some half-tone baristas look at the pressure meter from 3bar to 9bar for a few seconds and then think that it is a voltage change, which is really a mistake. But Cyncra is not only that, after doing 9bar standard extraction, it can also be returned to the pre-immersion pressure to do low-pressure extraction, so it is also a transformer machine, but it is not a flexible transformer machine.

Summary: there is no doubt that SYNESSO Hydra is a variable pressure coffee machine, and it can be adjusted arbitrarily, whether it is an enthusiast or an operator who is demanding on quality.

La Marzocco Strada's variable pressure concept is smooth extraction, the extraction pressure shows a slowly rising curve, the speed of pressure rise depends on the speed of the pull rod. For example, pre-soak 3bar, and then start the push-pull rod pressure will rise to 456789bar until the pump can output the maximum pressure, you can decide according to the digital pressure gauge to quickly push to 6bar or 9bar, feel that the push pressure is too high can also be pushed back to reduce the pressure, is a real transformer. But if the handle is not powdered, the pressure gauge will not change. Of course, coffee powder is necessary to make coffee, but if the coffee powder is thicker or finer, the resistance will be different, and the variable pressure data of the machine will be different, which requires some technology to control. In addition, it is difficult for the operator to keep the same speed of pushing the lever each time, so that the pressure curve will have an error every time. It will have an impact on the stability of the business. Finally, there is a part, La Marzocco Strada frequency conversion motor in the work is not pressure relief, depends on the amount of water pump to change the size of the pressure. For example, if the pull rod is pushed to 5bar after pre-soaking 3bar, even if it is no longer pushed forward, the pressure will continue to increase and can not be controlled. When synesoo sets the 5bar to work, it will relieve the excess pressure and stabilize it under the pressure set by the maker.

La Marzocco Strada EP can also set up electronic programs. For example, pre-soak 3bar for 5 seconds, then use 6bar to extract for 5 seconds, then enter the standard pressure 9bar for extraction for 15 seconds, and then return to 5bar extraction for 10 seconds or even 30 seconds to prevent over-extraction. But can not operate on this machine, need to use computer connection to import data, the operation is relatively cumbersome. After setting the electronic program, the instability caused by each manual putter can be avoided, but the problem of automatic pressure rise after entering the preset value (such as 5bar) can not be changed.

Summary: La Marzocco Strada is undoubtedly a transformer, but it is difficult to adjust the pressure arbitrarily, and it is difficult to achieve the same pressure curve, so it is suitable for enthusiasts to study and make different cups of coffee, which is not suitable for business. So the lamarzocco engineer himself said, "after using this machine for two years, I haven't thoroughly studied and understood it." and because the pressure lift is uncontrollable, the idea is "smooth rising pressure extraction" (similar to the pressure curve of a drawbar machine).

Slayer promotes pressure swing extraction abroad, but slayer has a general agent in China. With an official statement, it is also pressure swing extraction. On its official Weibo, you can often see slogans such as killing lamarzocco and killing synesso. Foreign information has misled the entire industry for three years, but the Chinese general agent continues to be so, even if the scene can not change the pressure also does not admit that it is not variable pressure, it is really amazing.

Two slayer users were asked later, and both said that the voltage could not be changed. Conclusion: because there is only one model of slayer, there is no different version, so the answer is clear: only pseudo-transformer with pre-immersion. Many practitioners who have illusions about slayer exclaimed, "slayer is a pseudo-transformer!"

As a brand model admired by many coffee lovers, as a large company in the domestic coffee industry, knowing that it can not change the pressure, spreading false information for sales and seizing the market, deceiving users, where is the conscience of the industry?! If you don't know, such an unprofessional company can be a general agent, and how can you rest assured of after-sales and service? Of course, I do not believe that as a general agent, I do not even know whether the pressure can be changed. I also hope that the general agent of slayer China can clarify officially that he will not continue to mislead the market. Even if it is not a transformer machine, slayer is a super cool coffee machine with stable temperature, and it also has its own selling point, so why do you have to advertise the functions that you do not have? the loss of the market is not worth the loss of more deceptive users.