Threshold Stasis 2 imput impedence

[taam]

I have a Threshold stasis 2 amp. I freaking love this unit. I am looking to integrate Vandersteen subs with my main speakers. For this they have a crossover that you put inbetween your preamp and amp. I need to know the input impedance of the stasis 2. I received 2 very different answers. First, Jon Soderberg said it is 15k... I have used him to rebuild in the past and trust him.. Second I emailed Threshold company they told me it was 75k. I have not worked directly with Threshold in decades. So I am leaning toward Jon being correct but decided to post here to try and get a third opinion.

Thanks in advance for your time.

Taam

 

[lineup]

Threshold Statis 2 Input imedance is 13-14 kOhm
To round it, we can say ~15k

Schematic

 

[taam]

Thanks for the quick response. This community is the best! I will start tonight on the crossovers.

 

[taam]

I emailed Nelson to check again. Here is his response.

--The input impedance is 75K. There is a 4.75K resistor and then a 10K resistor,
but apparently Jon does not understand that the 10K has been bootstrapped to
a 70K value.--

I wanted to post this in case anyone else is searching for this information in the future.

 

[lineup]

Well done contacting Mr Pass.
Nelson Pass should know.
So it is bootstrapped to 75k input impedance.