Thanks @melm I do love my tube pre, Coincident Statement MkII, 101D dht, and I do believe tube pre's and tube amps for that matter, are great match for 005. My take on 005 is it really excels with just the slightest added bit of warmth, harmonic development only tubes can provide. Doesn't need more than a touch of that tube warmth so the more neutral, modern sound tube amps/pre's just right. Also, modern top flight tube equipment needs not give up anything to SS in terms of resolution/transparency. This especially true with balanced pre, noise floor lower with balanced circuits, cables.
As far as the Musical Fidelity pre, I purchased MF M2SI integrated some years ago in a different setup, thought it very nice musical piece. Hit above its weight against a much more expensive class A SS amp. I too am not impressed with Mac, middling sound for the cost.
Update on new server, have JCAT Optimo S ATX LPS in house after 2 weeks wait for shipping out of Poland. Have new setup running but haven't listened yet, Euphony OS and Stylus player steep learning curve, this thing has ability to run direct from RAM, lowest latency (jitter) possible vs SSD. This setup should really test 005 potential, a number of individuals built virtually same server (minus the Optimo LPS) after having gone through previous lesser custom build servers over the years. Each considered this was best custom server they could build. Each of these individuals purchased Taiko Extreme server directly after this particular build, $35k last time I looked.