What value cap to bypass power supply cap?

Dave, thanks again. I found nice drawing that shows how rectifier diode behavior introduces EMI:

http://www.powerint.com/en/community/papers-circuit-ideas-puzzlers/circuit-ideas/careful-rectifier-diode-choice-simplifies-and-

Also notice at the "VDC Bus" arrow, that ripple is very big. When ripple gets very small charging current gets very narrow. That's the problem of linear power supplies that in reality are switchers (SMPS) operating at 120Hz but generating a lot of high frequency noise.

Also, SNAP shown at the bottom drawing is not perfectly vertical. Let's imagine that it comes back slowly. If we make vertical line from this small negative peak we can divide it into two times "ta" to the left and "tb" to the right of this vertical line. tb/ta ratio is called "Softness" of the diode. It means that diode pictured here has very little softness. Good diode is fast to switch off (short ta) but slowly snapping back (long tb).

Guys, I feel like a monkey being taught how to speak sign language. Dave, thanks for the watered down analogy of the tank filter. I'll see if this can be incorporated in my amp.

Dave and Kijanki, your very nice words are much appreciated. Thanks!

Dracule, I don't have anything much to add to the excellent inputs Dave and Kijanki have been providing. I would just emphasize Kijanki's point that there is most likely no need to spend a lot of money on the 0.1 and/or 1.0 uf caps, given that your present high value caps are good quality film types, and that the role of the lower value caps would presumably just be to provide filtering up to perhaps the low MHz region, and to provide supplementary short-term energy storage.

Do be sure to check that the voltage rating ("WVDC," for working volts DC) and the operating temperature range of the caps you choose provide large margins relative to the requirements. In typical amplifier applications, I would think that in general the commonly seen 85 degrees C temperature rating should be avoided, in favor of something in the 100 to 125 deg C area. And I would choose a WVDC rating that is at least twice and preferably three or more times as much as the voltage that will be handled.

Best regards,
-- Al

Thanks Al, for your wisdom. I will make sure I follow the guide lines provided by you, Kijanki, and Dave.

From many I have talked to, most agree to use bypass caps as close to the amplifier end as possible to filter out those ultra high freq noise in the hundreds of kHz into MHz. So can everyone agree on one sequence of capacitor values that makes sense? I'm not talking about bypass caps for ripple reduction across the power supply caps.

How about 0.01, 0.1, 1, and 10 microF?

Or even closer spacing?

Any chance of unwanted resonance creeping in using these series of values?