Sansa Fuze - insufficient volume after firmware update

Here’s the problem. After restoring my Fuze back to the “North America” setting or the everywhere else in the world, the volume is still too low. I use my mp3 player mostly in my truck with a cassette adapter, and listen to podcasts. I have to turn the volume on the Fuze almost all the way up as well as the truck radio. I’ve used a Zen V+, a Zen Stone, and even a cheap Coby in this manner. All of them had sufficient volume with plenty to spare. The Fuze just doesn’t have enough volume. With all other things being good about the Fuze, I can’t believe it fails so miserably here. It may be one of the better mp3 player for sound quality, but not if you have to turn it all the way up. In my opinion this thread is not solved.