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MC331 RCA Input Impedance

path4play

New member
Hi, I’m trying to find the input impedance of the RCA analog inputs on the Fosi MC331. It isn’t listed in the manual or product page.

Does anyone know the exact value, or can Fosi staff confirm the spec? I want it because I'm going to split the RCA's off the ZD3 DAC, with the RCA inputs to the Fosi-MC311 having a FMOD inline to cut the bass to the speakers, with the other RCA line going to the subwoofer.

The Harrison Labs' impedance shift table for which High Pass (Red label) FMOD Hz to use varies a lot depending on the Into Ohm load for the RCA inputs to the Fosi-MC311.

Thanks!
 
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