Oh? You think 10kOhm is a great impedance for a source to be looking at?
99% of sources, Yes, Yes and Yes again, unless you have a tube source with massively high unacceptable 3kohm'ish output impedance.
Just don't tell me how uncolored they are because that's a demonstrably false statement.You'll never know, with your low gain amps, and using 25kohm passives, you can take that to the bank. .
Cheers George