Thanks for the response that was helpful.
What dac are you using? The fireflies are near the upper end of my budget so I was wondering if its worth getting them if the stock dac is poor. I can use the Oppo HA-2 or Chord Mojo as an existing DAC or pick up a modi 2 or something... would it be smarter to get like a schiit pairing?
My goal is a warmer HD800SDR. But I also want an upgrade over my chord mojo which I'm using now.
Thanks in advance.
Hey so yeah Priscilla basically spelled out exactly what I was gonna tell you. The tube power supply is absolutely worth every penny. Especially if you want to really warm up the sound of an HD800. However, I will add that the upgrade power supply tubes are a little tricky to find but not impossible. And compared to the upgrade tubes for Woo's bigger amps the WA7tp's are dirt cheap. $30-$160/pair with most under $100 and those are also worth every penny.
Priscilla is also right about the CBS Hytron tubes, they're tough to get a good matched pair but the sound is sooo good. Mullards are just smooth, detailed, and neutral but not exciting imo. Sylvania JANs are like $30/pair and seriously addictive sounding if you're into deep bass and lush liquid midrange. Anyway, you miss out on all these options if you don't go tube power supply. Idk why power supply tubes alter the sound either but it's incredible.
DAC time. Mojo will likely be a little better than the WA7 internal dac, but to outperform a Mojo you're probably gonna have to shell out some cash north of $1k. Either way try both the onboard dac and your Mojo with the WA7. You may find the internal dac has better synergy with the WA7's amp section than the Mojo.