Unless the DAC is very tightly integrated into the actual speaker (literally fused, so it's hard to connect to the coil), there always will be an analog loophol

Unless the DAC is very tightly integrated into the actual speaker (literally fused, so it's hard to connect to the coil), there always will be an analog loophole. DRM is not about preventing this, though. It's about making ordinary consumers surrender to whatever media dictates, not preventing absolutely everyone from ripping the content.