Is the audio research D150 still a worthily amp?

I recently inherited an audio research D150 from my grandfather. the amp has not been used in over 15 years and will cost fair amount to money to get it serviced. I would like to know how this old amp will fair up against a modern power amp in the $2000 region? i would also like to know if there are places specialised in servicing old Audio Research gear, perhaps giving them some new life with modern capacitors?

finally, i'd also like to know what speakers would work well with this amp? i prefer speakers that are time aligned with a sealed box. please, only advice from experience with the same or a very similar set up. i do not need any random suggestions.
Thanx