looking for a Integrated amp $6,000 range

If you can buy used, a Luxman 590axii is an amazing value and within your price range. A few months ago, I auditioned a lot of amps. My top picks were Luxman 590axii and Hegel 390. If you’re going with tubes, Raven Osprey or a used Audio Research vs75i (one on sale at Agon)

Tharbamar did a few reviews that might interest you

https://www.youtube.com/watch?v=Scfy2CTljug&t=936s&ab_channel=Tharbamar

I second or third Luxman.

3rd or 4th the Luxman, specifically the L-590AXII if looking at Class A

McIntosh MA352