D’agostino integrated amp vs their amp and a tubed pre amp setup.

You should look at t+a gear a german compsny their older hv 3000 integrated amp was compared at the time to the time as the twice as expensive dagastino and found to be just as good

"https://positive-feedback.com/reviews/hardware-reviews/ta-elektroakustik-3100-hv-pdp-3000-hv-sacdcd-...; https://positive-feedback.com/reviews/hardware-reviews/ta-elektroakustik-3100-hv-pdp-3000-hv-sacdcd-...

T+a gear is one of the finest manufacturers of gear on the planet the hv gear uses high voltage rails to emulate the sound of tubes

Dave and troy
Audio intellect nj
T+Aelectroacoustik dealer

4425 check the review of the PA 3000 the reviewer found the t+a integrated at18k to compete with the52k momentum integrated  

T+a gear is in another league then dagastino 

T+a is the largest electronics manufacturer in germany they have 110 full time employees
With 14 full time engineers 

They have pioneered tons of new technoogy

The make their own cd transports as well