Many months ago I bought a DAC to use with my computer in the bedroom to connect to my Musical Fidelity X-Can V2 for some headphone listening. I have used it, but not been impressed by it at all. But when surfing around, I got into this crazy page about installing a tube amp output on CD players and DACs. And he listed the cheap one I have as one of the best DACs he ever heard. The guy bypasses the output stage and replaces it with a simple tube buffer/amp. That got me interested.