I have never had any BAT equipment. I do own the Audio Research ls27 and it is a great preamp. It is not overly tubby at all, but it has a great midrange and I think it would be a great match for your Ref 110, which I have heard.
I once owned a VT100 MKIII power amp and as others have said the ref series is in another league, but I understand your plight and made the choice for the ls27 from a ls17se. ARC stuff works really well together. Good luck with whatever you choose and keep us posted.
I once owned a VT100 MKIII power amp and as others have said the ref series is in another league, but I understand your plight and made the choice for the ls27 from a ls17se. ARC stuff works really well together. Good luck with whatever you choose and keep us posted.