Preamp to pair with CA 851w

Hi all - I'm looking to add DAC and preamp separates to my existing set up (Monitor Audio RS6 and Cambridge Audio 851W) and considering a Schiit Gungnir multibit and Freya+ combo.  I'm honestly a bit lost on how to determine synergy between the Freya and CA 851W.  Does anyone have any experience with or thoughts on how they'll pair?  I've added some specs below to help.  Thanks in advance!  

Freya+ specs:

Cambridge 851W specs:

Power output – stereo/mono 200W per channel into 8 Ohms

350W per channel into 4 Ohms

Power output – bridged mono 500W 8 Ohms

800W 4 Ohms

THD (unweighted) < 0.001% 1 kHz

< 0.005% 20 Hz - 20 kHz

Frequency response 5Hz – 80kHz

S/N ratio (ref 1W / 8 Ohn) >90dB (unweighted)

Sensitivity – stereo or mono 1.5V rms unbalanced

1.5 + 1.5V rms balanced

Sensitivity – bridged mono 0.775V rms unbalanced

0.775V + 0.775V rms balanced

Input impedances Balanced input 38 kOhm

Unbalanced input 68 kOhm