Passive preamps and poweramp's input impeadance

Another thing to calculate, that no one seems to be considering, is the actual output impedence of the passive which changes with the setting of the volume control (which will vary depending of the output of the source). The output impedence of the creek, according to its manual, swings from 50K to 0. This is too complex for me - math wasn't my best subject, but logic tells me that with the variable output impedence of the Creek you should listen to it in your system before you reach any conclusions.

Is my face red!!!!!!!!!!!!!!!!!! I had my head where there is no sun when i breezed thru the initial post and for some reason thought we were considering the OBH 12 passive preamp (my excuse is the several recent posts on this unit). The manufacturer's specs on the OBH14 show the following output impedences: DAC - 620 Ohm, Non-adjustible 10 Ohm, and the Variable/adjustible is a fixed 5K Ohm. The original post said the Rotel imput impedence is 33K, not the 23k so we have a 6.5 to 1 ratio. It might well work with some minor rolling of the frequency extremes. He could always buy one at retail from audio advisor, which has a 30day return policy, and send it back if it doesn't work out.