Yes, you are. I can't speak to the DAC, but in my preamp and as drivers in my amp, the GE five stars sound quite good and superior to the Raytheons. I don't have any CBS. As mentioned above, there are several other 12AU7 variants that I prefer.
Thanks for your responses. Does anyone care to comment on sound character of any of the various 5814a? For use in a DAC, I'm looking for the greatest detail, balance and accurate tonality. Maximal information is the key here; I can "tune" with the tubes in my preamp.