tiefbassuebertr Member Joined 2005 tiefbassuebertragung.de 2022-02-17 8:37 pm #1 2022-02-17 8:37 pm #1 Who know this device and can upload the manuals ? Attachments Grundig MGL1451.jpg 10.1 KB · Views: 113 Grundig-Pegelmesser-Klirrfaktor-Messgerät-MGL-1451A.jpg 21.2 KB · Views: 140