cathode bias question

[daz]

when i first made my EL34 build cathode biased, i had a switch to remove the caps across the bias resistors. the amp was very low volume and very rich and spongy. Unbalancing them with different sized caps causes a similar tone tho not as much and not as low in volume. I was however told thats not a good way to run the amp so i added caps. At first 22uf, then later 220uf upon a recommendation here saying 22 is too small. i would however like to still have that sound as an option and would like you thoughts about how to accomplish it in the best way. The ideas i had were a switch that would 1)-switch one side to a smaller cap, say a 500-100uf, 2)-a resistor in series with one of the caps, 3)-resistors in series with both.

not sure which would accomplish that tone the best, but what would you say is the best way to go about it, including a different way if you have one to share.