In regards to input impedance, I read that the XPA-1 has 33 kohms balanced as opposed to 23.5 kohms unbalanced, so I brought some cheap rca to xlr adaptors for the Cambridge, and to my surprise it sounds better through the balanced inputs using the adaptors, fidelity hasn't changed, but dynamics have improved across the board.
I thought this must have been due to the greater input impedance of the xlr inputs, until I realized that those specs were for the gen-2 XPA-1, I have the gen-1, and the input impedance of the balanced input is actually less, 18 kohms balanced, as opposed to 20 kohms unbalanced.
So that's got me confused, but either way I'm definitely going to stay with the xlr connection, so I've brought some Cardas clear rca to xlr adaptors to see if they're an improvement over the cheap hosa adaptors.
Anyone got any idea why dynamics would improve on the balanced inputs when it's not even receiving a balanced signal on those inputs?
Last edited by guzz46; 09-28-2014 at 11:56 PM.