It’s interesting that @rs67 felt his Pass edged out the LM805 when my experience was just the opposite - I had the Pass XA30.8 paired with a VAC Ren MKV pre and the LM805 was actually quite a bit better when paired with O/96’s. The only caveat I will add is that I do tend towards jazz much of the time but the bass extension, texture, air, and 3D soundstage was simply much more impressive to me with the LM amp. I do run the LM805 with the VAC pre and found it makes a material improvement versus running the 805 as an integrated. I suspect VAC integrated the volume control much better than LM.
@crandell The LM805 does benefit greatly from replacing all of the stock tubes and it can get a bit pricey depending on your tolerance, but it doesn’t have to. I run a vintage Mullard ECC35, a pair of 60 yr old Tung Sol 6SN7GT round plates, a pair of Psvane ACME 805’s ,and a pair of EML 300b-XLS tubes. Really a stunning presentation of music.
The Leben is a well-known great match with the O/96’s and offers more flexibility because of the tube choices it accepts but you may feel it doesn’t quite comparatively deliver the dynamics and certainly the "SET magic" of the LM805.