Audio research does have its house sound which can be a bit un-involving at times.
Your situation sounds similar to my own. I've been there, done that. I spent several years trying to eliminate that lifelessness. After replacing my speakers, turntable/arm and power amp the sound was a different lifeless. I got down to my least suspected components - ARC PH-7 and Ref 3. Jumping ship to another brand was a revelation. I know people love ARC. I did. Things change.