I have a Trinty 100 and its input impedance is 100K. As far as I know, the Trinity 100 has essentially the same front end as the 300.
Input impedence for Llano Trinity 300?
My Vandy 2w sub is arriving next week (bought on the gon of course) and I didn't get a spec sheet with my Llano amp. I've not had much luck trying to contact Randy White before, so if anyone knows the input impedence to start dialing in the sub cross-over, I'd appreciate it.