Here are the dates and info about the 2018 (36th) 'Tokyo International Audio Show' (TIAS for short)...
Saturday 17th November 10.00 - 19.00
Sunday 18th November 10.00 - 17.00
Entry is free. The only requirement is filling out an on-site registration card. The show is held at the 'Tokyo International Forum', located in Yurakucho, Tokyo.
Here is the website link in English: tokyo-international-audio-show
