I listen to two-channel sources in two-channel playback, sometimes using an analog bypass, other times using my receiver's bass management with the subwoofer. The results are too inconsistent using DPL or other DSP decoding for me to enjoy listening to two-channel sources with processing on all the time. I will say though that ever since I timbre matched my surrounds, I do sometimes enjoy five-channel stereo whereas I hated that mode before.