Actually, this is only a perception. There is only so loud the DAC-2 will play and this is a preset level at the factory. We recommend checking the manual, page 9 under "Volume Min / Max Setting" as it goes over this issue in detail. Essentially, the DAC-2 is factory preset with a volume table of 0-70. However, we recognize that systems differ in acceptable ranges of minimum and maximum output levels. Thus, we made the DAC-2 minimum and maximum output levels customizable by the user. When either the minimum or maximum level is changed, the display level number will update to reflect this setting by subtracting the level change from the max range of 70. Changing the min level doesn't affect how 'loud' it will play, it only offsets the starting position on the volume table.
For example, in an inefficient system requiring a minimum volume level of 12 to hear anything, adjusting the minimum level to 10 will remove steps 1-10, and the maximum volume level would display 60 (70-10).