I use all digital sources, so currently running an all tube system. I've used an MHDT Orchid for a while now and enjoy it very much, sound is warm, but not overly so. Plenty of detail. My second r2r DAC- they beat the pants off high oversampling DACs to me. Do kind of wish the tube could be switched in/out of the signal path, it's nice to have that option if one enjoys a wide variety of genres and styles.