Power Conditioners

@dannad,

All large electrolytics are usually supplanted on their side with smaller hi grade mica capacitors around  0.1 -> 1uF to short out the hi frequency noise.

By rectification, I meant to say the peak value of any variation on the txformer output will be caught by the large filter capacitor.  Any hi frequency noise will be snubbed by the capacitors in parallel with the rectifier diodes.

99% of all amps have all these hi freq eliminating capacitors in place.

You do NOT need them, unless you live somewhere with a lot of lightning strikes. Other than that, there is no need. The filtering in the PSU of your devices are more than adequate. The rest is mostly snake oil or the improvement is so insignificant, it is not worth the expense.

If you have hum or noise issues, they are typically due to other reasons.  Those typically occur when you connect 3 pronged (with an earth connection) plugs to DIFFERENT outlets.  The miniscule potential difference which exists between the different earth points are what causes hum issues (earth loop).  Make sure that ALL your 3 pronged plugs connect to the SAME outlet, making a star connection.

again. Snake oil. 99% of electronics will already rectify/filter 99% of the noise out of the PSU dc lines reducing down to a miniscule ripple. You will not hear any difference.

İf you are hearing a difference, you must live somewhere where your power company should be taken to court for not being able to provide even the basic service. 

@rixthetrick

Take a look at a PROPER power supply for an amplifier here:

https://www.ti.com/lit/an/snaa057c/snaa057c.pdf?ts=1601059701990&ref_url=https%253A%252F%252Fwww...

And another one:

https://elektrotanya.com/bryston_4b_sst_amplifier_schematic_sch.pdf/download.html

Everything you say you witnessed in the German power conditioner are ALREADY almost all in the power supplies of properly designed amplifiers.

Apart from extreme overvoltage protection and voltage regulation (as I said before, in this case you need to take your power company to court), there is nothing else to gain from spending on a power conditioner.