Bruce, trying a CDP is a good next move.
Regarding jitter, one of the reasons for designing the transport only devices is to reduce jitter (compared to a digital out on the back of a common CDP). If the CXC had a jitter problem I think it would have been exposed on this forum.
Btw, I'm using a Cullen C7 PC on my Node2i.
One piece of advice I can give you from experience is that the transport must have good isolation, either through decoupling or vibration control. You can't fully control jitter if there's vibration.
This probably isn't related to your issue, but my PS Audio transport played back so smoothly after isolating it from the shelf.
Regarding jitter, one of the reasons for designing the transport only devices is to reduce jitter (compared to a digital out on the back of a common CDP). If the CXC had a jitter problem I think it would have been exposed on this forum.
Btw, I'm using a Cullen C7 PC on my Node2i.
One piece of advice I can give you from experience is that the transport must have good isolation, either through decoupling or vibration control. You can't fully control jitter if there's vibration.
This probably isn't related to your issue, but my PS Audio transport played back so smoothly after isolating it from the shelf.