Since you are asking for suggestions along the lines of the Cambridge you are thinking about, I would take a look at the NAD 356DAC too. Specs & price very similar and should do a good job with the very nice speakers you have recently purchased.
I have had two NAD amps now and can speak for their quality and longevity. I recently sold a NAD 3020 that still looked, functioned and sounded great after 30 years. Further, I got close to half of my original purchase price back. Not many products you can say that about. Good luck in your decision and enjoy the music.
Marantz PM15S2 LE, Oppo BDP-103, Simaudio Moon 100D DAC
VPI Traveler V2 with an Ortofon Rondo Blue and Simaudio Moon 110LP, Technics SL-1400 with an Audio Technica AT-14sa and Pro-ject Phono Box S
Dynaudio Focus 260's, Rel T-1 and a Panasonic TC-P54S1.