Passive Preamp Impedance Compatability Issues
I am looking to add remote-control volume capability to my audio system which includes a NAD 314 integrated amplifier. I've been told that a passive preamp connected between the pre and power sections of the 314 would be the best solution. I am considering the Creek OBH-10 and the Velleman K8022.
The Velleman (www.velleman.be) is substantially less expensive since it is a kit product, but I've never seen any reviews of its performance. My major concern with the K8022 is related to its impedance ratings input: 5Kohm, output: < 2.5Kohm. This is quite a bit lower than the preamp section of my NAD 314 input: 20Kohm, output: 220. The Creek has an impedance of input: <20Kohm, output: 0-20Kohm.
Can anyone tell me how these impedance figures would reflect on the compatibility between a passive preamp and my integrated amplifier?