What have you been concentrating on, what have you been passionate about, etc.? Masahiro Ishizuka.

I have been involved in the development of websites up until now.

When Hewlett-Packard was located in Kita-Hachioji City, Tokyo, KeySite is located there now.

I, Masahiro Ishizuka, developed an application while pointing out mistakes in the manufacturer's bit instructions with a UNIX-C application named AS, and at the Fujitsu Minami Tama factory, I devised a program algorithm by writing IF and FOR statements in units of 1 pixel with a JAVA application, and I also developed a speaker for my hobby of audio. I searched hard on the net to buy 

a Monitor Audio Bronze 2 16.5cm silver flat woofer and tweeter with reverse doom or mesh netting to prevent tampering and front bass reflex, and got a random result. I also searched hard to find a USB-DAC that was not listed on Price.com or Amazon reviews at the time, but I found the GUSTARD X16, and I selected it from a lot of random information, checking the specs each time, and actually purchased it. I bought it, and later learned from a writing site called 5CH that it was the second best sounding in the world, and the sound quality was amazing, and when I listened to Jackie Evanko's My Dad on AMAZON MUSIC, it was amazing and moved me to tears! I was moved to tears.