What a horrible thought. First, you have to get them to run at the same gain. Second, you have to make sure their volume controls track each other (impossible). Third, you have to manipulate two controls when one should do.
Finally, this old canard about tubes on top and SS on the bottom is just that today. There are preamps of each category that serve the entire spectrum superbly, if somewhat differently.
Finally, this old canard about tubes on top and SS on the bottom is just that today. There are preamps of each category that serve the entire spectrum superbly, if somewhat differently.