This isn't Japanese, it looks French and its just CD Players but they're some really nice vintage ones on here. http://vintage-audio-laser.com/
@Mister X : You follow my Googling steps! Vintageaudiolaser is where I practice my long-forgotten French (then revert to GoogleTranslate ) and where I first glimpsed Loewe Discman!!! Thanks to them (you know, like in: You, French folks!, politically totally inappropriate) now I have one!!! Korean site Rocks! Sorry, Walkmans! Fits the idea of the great geneticist Nikolai I. Vavilov (shot by Stalin) about the "centers of origin": they are close to where it all happened at that time. Lucky &@$¥@rds!!!
A lot of these I'm finding on www.yahoo.jp For some reason Google.jp still shows a lot of USA sites. That CD site popped up and it's hard not to love good design, that AIWA is beautiful. It's kind of like JackFM was in the early days, different formats but good music that everyone likes, those CD players would fit in anyone's system regardless if they have CDs. Hopefully some of the webmasters might see their sites here and join S2G, there's a ton of information out there and some of these sites are stunning.
Reli posted this site on the old forum, tons and tons of personal cassette players, some really rare models. http://gall.dcinside.com/board/view/?id=hit&no=4709&page=1
Junichi Matsusaki Boombox Collection, fest your eyes! https://iihi-tabidati.blog.so-net.ne.jp/2014-04-25
For all you tapeheads here's an old site archived on the Internet Archive Wayback Machine. There's a lot of cassette (and other tape media) information on here. https://web.archive.org/web/20051211144156/http://homepage1.nifty.com:80/mkx/tape/index.htm
The Stereo Generation Blog http://stereo-jidai.tumblr.com/post/164666993386/ラジカセ天国三共無線 https://translate.google.com/transl...4%B8%89%E5%85%B1%E7%84%A1%E7%B7%9A&edit-text= "Unfortunately most things of the big garage are junk"
I think the Stereo Generation Blogger wrote this book, it looks very interesting and it looks like it has a ton of personal cassette players in it. https://translate.googleusercontent...700201&usg=ALkJrhh3KXF2cZDErZY7_zYnxTtrKJB6XA
A man called Sony Boy Blog I will introduce the Sony products of the 1980s while looking at the catalog. It's a Sony! It's a Sony This is a treasure trove of Sony's 1980s Catalogs, most are in Japanese but look at all the really cool products they had mostly only seen in Japan. https://translate.google.com/transl...ad%e5%92%8c56%e5%b9%b4-1%e6%9c%88/&edit-text= https://bouya.officew.jp/2018/06/29/カセットデッキ-昭和56年-1月/
I was just looking for some information and found some cool old vintage tube articles on this blog. http://www.hp1.server-shared.com/hp1/index.html
I was combing the old forum and found a cool thread about the entire Walkman Collection, here's some old links, you need to get on the Internet Archive Site since they are long gone. https://web.archive.org/web/20050810005854/http://www.geocities.jp/wm_fun/
I found this while looking for pictures of the Sharp QT19 http://www.video-koubou-topaz.jp/SHARP-RADIO-BOOMBOX-1982.html There seems to be much more on the video-koubou-topaz.jp site but since I can't read Japanese I was just getting random articles.
It a great site, I don't know if you've tried the Google Translate Option Longman, but it should work on that page. https://translate.google.com/translate?sl=auto&tl=en&u=http://www.video-koubou-topaz.jp/