Scott Nixon of Scott-nixon.com who sells the latest generation of his DAC designs either with or without tube output at a laughably cheap price. His customer service when analyzing, repairing, and cosmetically enhancing his older generation Anodyne ATAS DAC totally amazed me, and at a price more charitable than commercial. When a manufacturer will look at their old equipment over ten years later, and take care of it completely for less than the cost of just the estimate fee locally then I am impressed. His newer designs are so elegantly simple in design it will take 20 years to need work in or out of warranty, and by then we'll all be listening to some technology not yet dreamed of.