https://i.imgur.com/8izqxTA.jpg
https://i.imgur.com/0w1XgmW.jpg
https://i.imgur.com/qDWhYgG.jpg
https://i.imgur.com/glW9kcQ.jpg
公式
https://www.marantz.com/ja-jp/product/amplifiers/model40n#
紹介
https://av.watch.impress.co.jp/docs/review/review/1516203.html