There is a brand new firmware update for models URD470SW/WE
Please use this Software-Update to install the newest Firmware version for the CD-/radio alarm clock soundmaster URD470 to get all updated functions. This update allows you to set the desire alarm volume in the alarm adjustment menu.
You can download referring firmware and installing describtion here as ZIP-file. Unpack file and follow PDF manual for update. You need one empty USB-stick (min. 8 MB) for update procedure.