First of all (please don’t take offense) refer to your speakers as "standmounts" not "bookshelfs" its not 1983! Have you demoed the Boulder 866? The mentioned Hegel could be a sideways move when compared to your current Parasound separates. Have you considered the newer Parasound JC 5 power amp? Keep your P6 preamp then upgrade your DAC/Speakers.
Spending a month's salary
I don't have much experience as an audiophile. Based on my research, the bulk of spend should be on fine speakers. I have $20k to invest in either a superior AMP, DAC or pair of speakers. What to do?
My room is on the smaller side, listening position is about 7-8ft from the speakers. I suppose bookshelf speakers are appropriate. Right side speaker is very close to side wall <1ft. Left side is open to 6-8ft. Back wall is about 10 ft from listening position. Speakers sit about 3ft from front wall.
My current setup:
Revel 106 speakers
Parasound P6 pre and A21+ amp
Node 130 streamer w/ upgraded Teddy PS
AQ cable loom.
I prefer bookshelfs given my room. Separates are ideal, though I would like to consider an all in one like a Boulder 866.
Which component is most important. I'm not looking to have an unbalanced system. Eg. $15k speakers and a $500 DAC.
Appreciate any insight.