As an owner of a Hegel h390 let me take a stab at explaining the sauce. :)
Even at retail you get a lot for the $. You have a high quality DAC, a streamer, and a very capable amp that, yes, does sound very good. They are powerhouses as well. Not sure what wattage you’re wanting but the 390 has been bench tested at 270w into 8, and 490w into 4. Stable into 2. Damping factor is 4000. They can drive almost any speaker with grace and iron control. The 590/600 of course are even more powerful and I’m not sure there are speakers made they can’t easily drive.
So, literally all you need to listen are speakers. And, I got mine brand new for $4500. If that’s not good value then we have a different understanding of the word. 😉 Imo to get the quality of sound a 390, 590 or 600 provide, buying an amp, preamp, DAC, streamer, you’d be spending 5x as much. Frankly I cannot think of a better value or more bang for your buck. 👍🏼 People spend more for an Ethernet cord. 🙄