As with the NW-HD3, the volume is limited to comply with Euro regulations. Normally not a problem, but older CDs seem to be encoded at a lowere volume, and for some CD audio or MP3s I have forund the volume of the HD5 too low. The following solution is for the HD3, but works for the HD5 if you substitute the "search-menu" for the "MODE" button reffered to. Obviously, once in the Service Menu BE CAREFUL. There are various parameters, and you only want to change the SP (Sound Pressure??) option. Turn it off and the volume bar gets longer and the player louder. How to disable the max output limitation This simple hack will disable the built-in output throttling in the European versions of the player and thereby raising the max volume by a certain amount (something like 20% - just my estimate). 1) To enter the service menu, first make sure the player is on (i e plays a track). 2) Stop playback. 3) Set the player to HOLD before the player switches off. 4) While holding down the MODE button, enter the following key combination on the navigation wheel: RIGHT RIGHT LEFT LEFT RIGHT LEFT RIGHT LEFT UP DOWN 5) Now as you disable HOLD, the display goes dark and says "POWER". You are now inside the service menu. 6) Click UP so that the display says "OTHER". 7) Click RIGHT so the display says "G TEST". 8) Click UP as many times as needed until the display says "SP SET". 9) Click on the PLAY button. If the display says "OFF", than you might just as well leave the service menu (go to step 11). However if the display says "ON", it means that it the player is set to restricted output. 10) Click on the MODE button so that the display shows OFF. 11) Press the PLAY button to store the new setting. Now the display should say SP SET. 12) Hold down the MENU button until the unit performs a normal startup. 13) You must now enable the backlight again by using the normal Menu function.