Pre 90 - Input Impedance
Balanced - 2,000 Ω
Unbalanced - 10,000 Ω
Denafrips Areies II Output Impedance
Balanced - 2,400 Ω
Unbalanced - 1,200 Ω
so for best impedance matching you would need to connect it unbalanced from the Aeries II into the Pre 90. The input impedance is higher than the...