In this case, X-SABRE 3 is more suitable for you.
In addition to the fact that you only use Roon, you have excellent pre-amp from McIntosh, so the Hyper-Control (digital and analog hybrid pre-amp) in the element X2 Pure might be useless for you.
In addition to the fact that you only use Roon, you have excellent pre-amp from McIntosh, so the Hyper-Control (digital and analog hybrid pre-amp) in the element X2 Pure might be useless for you.