Fosi ZA3 RCA input impedance?

[Jaenas9]

Hi all,
Happy owner of a pair of ZA3s running in mono.

Can anyone tell me the input impedance of the RCA inputs?

I'm looking to create some line level filters upstream of my amps so I can more precisely pair my mains with a subwoofer. I can't find this info in the manual or on any forum.

 

[HalSF55]

I'd also like to know the input impedance for the ZA3, both the RCA and XLR inputs.

I'm seeing this question being discussed with some frustration in several forums, and it would be great to find out what these specs are.

 

[HalSF55]

I emailed Fosi Audio Support with this question and received this prompt reply:

The input impedance for the ZA3 is as follows:
- RCA Input: 47kΩ
- XLR Input: 20kΩ