Why with DAC & amp are you putting high emphasis on "a company that spends very little on marketing and works to move as much of the value for the money to the product itself", but you have listed some speakers that exhibit the exact opposite IMHO(i.e Wilson & Revel)? Speakers are available from a larger number of companies than other categories, with more variation in value, style, strengths & weaknesses. It's a much more personal category and requires listening more than any other category. Whatever your preferences I am guessing you can find a few from smaller companies that will give you more value.
On the amp/pre side does it have to be an integrated? I would say that a $3k Backert Labs Rhumba preamp is a tremendous value and if paired with many amps ~$5k would be a great start. It's smart to decide on the speakers you want before choosing a power amp since the speaker might affect what amp with be best choice.
If it has to be an integrated ss amp, ASR, Pass Labs come to mind as more musical than most. Cheers,
Spencer