I guess that tube amps even more greatly benefit from monoblock designes. With (i guess) the same tube compliment MB125 delivers greater power and so is sound precision and accuracy.
Since I service consumer's electronics I've often had a chance to bi-amp my monos(VTL MB100) with descent powerfull SS amps(mostly digital) and many times made a conclusion about shy-ish bass of my tube amps(or maybe all of them due to output transformer).
The midrange, top-end accuracy and holography I havn't heard yet on any descent priced SS amp(I bought them used for $1000).
Since I service consumer's electronics I've often had a chance to bi-amp my monos(VTL MB100) with descent powerfull SS amps(mostly digital) and many times made a conclusion about shy-ish bass of my tube amps(or maybe all of them due to output transformer).
The midrange, top-end accuracy and holography I havn't heard yet on any descent priced SS amp(I bought them used for $1000).