I have a digital system consisting of laptop to Dragonfly to Yamaha receiver. Correct me if I'm wrong, but don't receivers contain a converter? Basically I'm asking if it's superfluous to have one DAC feeding another, or if the Dragonfly is acting as a kind of "pre-converter". I was considering a DAC upgrade but if the receiver's DAC is the final effect I'm hearing in my music then I won't bother. Thanks for any input.