Powerconditioners for digital?

Hi Sabai. What is your DIY conditioner? Your isolation transformer? Have you tried an Equitech 2Q just for comparison? Ever try the MIT ISO HC and/or Z Stabilizer 11? How about the original Z Stabilizer?

Ptss,
I was given an original "white toaster" Z Stabilizer unit many years back.
The power switch never lighted up when turned to the on position, the unit itself was dead silent and either the audio system being auditioned was not sensitive enough for me to hear improvement, or the unit just never turned itself on.
Would there have been a way to know for sure if this unit was mechanically or electrically broken rather than just ineffective?
It has been in storage, too good looking to discard, waiting to be awakened by some knowledgable audiophile.

Hi Listener. That original Stabilizer powered on whenever plugged in. The switch was not an on/off but rather for A or B setting options. The light burning out/not working was not uncommon.
The unit is dead silent-plugged in or not :). I doubt it is 'broken'. I have older Spectral Reference pre & amp and MIT reference power cords, i/c's and speaker cables. The effect of your unit is immediately discernable in my system-and I still use the Stabilizer in a rather unique applications-chosen by ear.
Tell me about your system and I will suggest uses. We can chat.