Power Conditioning / Surge Protection

Hard to say if your Richard Gray Power Stations are up to the task without knowing the specific model number. The website does indicate that current models offer "balanced surge protection" but no info on protection level.

You might want to start by contacting the company and finding out if what you have is adequate or not. If you end up replacing your existing units, the higher-end Audioquest and Furman power conditioners are solid choices.

Herewith are a couple of reviews that provide some insight into how the Richard Gray units work....

http://www.soundstagenetwork.com/revequip/richard_grays_power_company.htm

https://www.stereophile.com/powerlineaccessories/255/index.html

It’s interesting that an inductor is in parallel with the AC input and is used to provide energy storage for transient current demands. A "sacrificial" MOV is also used for surge suppression.

Reportedly, Richard Gray is now semi-retired and is a consultant for RGPC.

For those with a technical "thirst", the following are a worthwhile read....

https://www.audioquest.com/resource/1138/Power-Demystified-whitepaper-8-23-18.pdf

https://shunyata.com/technology-guide/

@audio2design - Garth Powell (Audioquest) talks about current compression in power amps and its effect on sound in his "Power Demystified" article (link above), an excerpt of which is presented below....

There is an additional problem: In order to cover enough range, a passive filter will require some inductance (the “L” in LCR), which will raise the AC impedance somewhat and create a phase lag for power current transients. This is of no consequence to video, computer, or source audio components, as they utilize low-amperage constantcurrent circuits. However, this can severely current compress a power amplifier as its power supply draws down to supply an audio transient, while the power amplifier itself requires a large influx of current to its power supply to maintain low-distortion operation. To get around this issue, many passive AC power filter/conditioners will isolate the circuits that utilize any series inductance for source components only. The circuit without series inductance is set aside for the “High Current” power amplifier outlets. If a power amplifier experiences current compression, the sound that results from an audio system can be described as thin, anemic, muddy, and slow, while the soundstage tends to collapse or pull with frequency during dense or modulated passages.

audio2design101 posts11-08-2020 11:30am"Garth Powell writes some words but offers no proof or even solid technical discussion. This is word smithing for consumer marketing. The higher current the peaks the larger the instantaneous voltage change which is much harder to filter out for subsequent electronics. That so called compression only happens if you are driving the amp into clipping. If you are not driving into clipping no solid technical explanation has been presented for loss of dynamics. More likely seems a decrease in the THD unless clipping."

The current "compression" that Garth Powell refers to is what I would call current "starving" which can occur in power amps at levels lower than clipping due to transient voltage drops associated with high source impedance. The effect on sound has been experienced by many audiophiles, which is why many plug their power amp (or integrated amp) DIRECTLY into the wall outlet.  

spatialking285 posts11-07-2020 6:07pm"....The "inductor in parallel with the line" term must mean in series with the line, since it is counter productive to put it in across the line, and in parallel means the line is shorting it out.  If they mean something else, then it is not in parallel with the line."

The SoundStageNetwork and Stereophile reviewers (see links above) both state that the inductor is wired in PARALLEL with the AC line. An interesting departure from more modern designs in which series-mode surge suppressors use an inductor wired in series with one leg of the AC line.