Multibit is said to be "Bit Perfect" for the conversion of PCM (Redbook dc) many hiend manufactures are reverting back to it for PCM replay, after going down the cheaper Delta Sigma conversion way, like Schitt did for this Bifrost which is Delta Sigma, and now the upgrade for it is back to Multibit dac.
Your Onkyo btw is a Delta Sigma based dac converter. It will be interesting to see what you think the sound difference is playing Redbook cd using it as a transport into the Schitt Multibit dac.
Myself, the sound of Redbook when converted with a properly implemented Multibit dac has a dynamic jump factor and a body to the midrange that Delta Sigma can’t match, it’s sweet and laid back but a bit of a yawn to listen to after a while, and doesn’t excite and keep your attention like Multibit can on rock, middle of the road, or classical.
Cheers George