The Hori Store shopping website has put up a product listing for the new Hori Real Arcade Pro. 4 Kai Silent, revealing a chart that compares the silent versions of the Hayabusa stick and Kuro buttons to the regular versions. You can check out the comparison below this paragraph.
As you can see above, the Hori Real Arcade Pro. 4 Kai Silent significantly reduced the noise level when using the Hayabusa stick and/or Kuro buttons.
The store also provided a look at the layout and specs of the product. Take a look at both below this paragraph.
Last but not least, the shopping website also listed the requirements and limitations of the accessory. The Real Arcade Pro. 4 Kai Silent requires the latest system software on the PlayStation 4 in addition to a firmware of 2.80 or higher on the PlayStation 3. It won’t work on the PS1/PS2 systems and is not guarantee to work with emulated PS2 software on the PS4/PS3.
The fighting stick also does not support gaming headsets and microphone input in addition to not having a light bar, motion sensor capabilities and left/right analog functions.
Along with the Hori Store, you can also purchase the Hori Real Arcade Pro. 4 Kai Silent on Amazon with this link.