The issue with the volume control has never bothered me. I understand that with the lower settings, you loose resolution. I did a pretty good test a few years back with some friends who wanted to find out how much of a sound quality loss there was with regards to lower volume settings. To make a long story short, none of us could hear any difference as all, regardless of volume setting. Actually, you are the first person I've spoken to that has heard a difference. Wadia says that you may hear a difference at settings less than 67. I guess they were right after all.
Either way, there may be a simple solution to all of this. From the looks of your post, it doesn't appear that you are aware that you can change the overall gain of your CD player. Its a feature that Wadia has that allows you to keep your volume setting as close to 100 as you can. (It also helps for high efficiency speakers as well, but thats not the case here.) All you have to do is flip the unit over and remove the 4 feet at the corners. Once you do that, you will have access to a threaded rod in each corner. Unscrewing them lets the remove the top. After you get the top off you will see a row of DIP switches. They control overall gain. Just experiment with it until you find a spot that lets you max out your volume as close to 100 as possible.
Either way, there may be a simple solution to all of this. From the looks of your post, it doesn't appear that you are aware that you can change the overall gain of your CD player. Its a feature that Wadia has that allows you to keep your volume setting as close to 100 as you can. (It also helps for high efficiency speakers as well, but thats not the case here.) All you have to do is flip the unit over and remove the 4 feet at the corners. Once you do that, you will have access to a threaded rod in each corner. Unscrewing them lets the remove the top. After you get the top off you will see a row of DIP switches. They control overall gain. Just experiment with it until you find a spot that lets you max out your volume as close to 100 as possible.