Amp for B&W 805 D3

I would check out the AVM A5.2.  The base unit lists at $5995 and you can add is a DAC (+$600) and Phono (+$600) via optional.  

This is a German brand that is more popular in the EU than it is here but is brilliant equipment.  The 5.2 has a proprietary tube made just for AVM in its input stage that is designed to last for 30,000.  This is not rollable, never really wears out, but gives the amp a touch of warmth that is perfect with speakers that are a hair forward like B&W.  Plenty of power to control the 805 D3s driver.

I am an AVM dealer but also sell forward speakers that compete very directly with those 805D3s.  PM if you are interested.  

I mainly like the warm and detailed sound.

This makes me wonder why you’re considering the 805 D3?  There are many other excellent options that would seem to better cater to your tastes. 

I've had 805s for a while and I really love how they sound, at least for my taste, it's very subjective

“I mainly like the warm and detailed sound.”

I highly recommend Accuphase Integrated E-650. You can pick up a used one for under $9K. 

Try the new NAD M33. Streamer,dac, dirac all in one unit.