Go with the SMSS.
If not that unit, a Furman, which has other goodies like outlet switching.
The series modes suppression is also very effective at noise cancellation.
Be careful on the specific unit on the Torus, it seems (based on late night, tired reading) that the RM does not have SMSS, but the AVR does.
The RM does say it has surge supression, but series mode has better reliability and a noise filter that starts down around 2-3 kHz.
brskie Isolation Transformers
Product OverviewThe IS250 is a 120VAC 2.1A 60Hz Isolation transformer-based Power Conditioner offers complete line isolation, continuous noise filtering and enhanced normal and common mode surge suppression. Internal low-impedance isolation transformer component with Faraday Shield offers 100% isolation from the input AC line. Secondary neutral to ground bonding eliminates common mode noise, providing an isolated ground reference for sensitive equipment and an inexpensive alternative to the installation of dedicated circuits and site electrical upgrades. Removes EMI/RFI noise, utility switching transients, background spikes generated by other on-site loads and utility or lightning related surge conditions. Additional surge suppression components placed at both the line input and transformer output combined with full line isolation offers continuous line filtering of a full range of power line noise in all modes.
Great, they have very good Gavanic Isolation as they have an air gap, just don’t use them on poweramps better they to go direct into the mains to get the "stiffest" power transfer (lowest impedance) for control.
For your source/preamps this is all you need. (Don’t waist your money on expensive fancy "HiFi" filters ect) https://www.newark.com/tripp-lite/is250/isolation-transformer/dp/90B6979
I have the Furman Elite 20 PFi that I am using with my home theater system. Having so many amplifier channels (11.2) it helps that it has "in excess of 4.5 amps continuous power with 55 amps peak up-charge that is cleaner and faster than a dedicated line from your local power station." Your system contains many excellent components and I believe it would benefit from a component having really fine filtering and surge suppression that the 20 PFi offers. It also protects your internet and ethernet connections. You can read the owners manual here, https://www.furmanpower.com/products/all/component-power/elite-series
The Inakustik 3500P
has many of the functions that you’re looking for built into one housing. Here’s a discussion
For my system, I have a separate balanced power conditioner that is plugged into a separate Transparent Audio filtered power conditioner with a surge protector. They play very nicely together. I'm a fan of both balanced and filtered power. The only drawback is another power cord.
Do you have experience with the Inakustik AC3500P?
No but at $3.5k!!! I would try the $149usd option first.
Which ever nothing is still best for poweramps, as they need to have the stiffest connection to the mains, no "resistive components" between their power supplies and the mains zero impedance if possible. Unless you want similar to soggy "tube rectification" type bass.
I have experience with two of the 3500P Inakustics units. One for the Brain and one for the Brawn. They handle it fine. I would buy them again. I had more than 6 pieces of gear to condition.
+1 cio52 re Furman elite 20pfi
In my system, bass is a tighter and sound has less grain when amp is plugged into Furman compared to wall.
bass is a tighter?
Less grain maybe but I find the tighter bass puzzling as it goes against everything a stiff power supply is, unless somehow it's rolling the bass off earlier, which is impossible in my books.
So how would you know what the Inakustik does or does not? Anyway, you should try before you make assumptions or comment on the price to performance ratio. The OP's Torus do not sell for $200 either. Just saying.
So how would you know what the Inakustik does or does not?
I’m just saying anything between the poweramp’s power supply and the mains "has to" introduce some sort of series resistance. And that "has to" reduce the stiffness of the amps power supply, which has to effect it’s bass performance.
VTL’s David Manley (rip) did a very famous paper way back on it back in the 80’s, you should read it changed all views on poweramps power supplies design and how to get their power from the mains and how they should behave, I think for memory maybe even Dan D’Agostino took heed of his words on it.
The OP’s Torus do not sell for $200 either
I don’t think I said they did
Thanks so much everyone. I appreciate the recommendations for the Inakustik 3500P and I am definitely researching that unit.
I am still hopeful that some of you have had experience with either the Equitech 2RQ or Torus RM20 rack units that you could advise me on.
I am still up in the air about the balanced output of Equitech and how effective it is as opposed to the Torus NBT technology. Two different approaches, but which is better? Thanks again for all your feedback!!
I live in an area with lots of voltage fluctuations. I settled on the Torus AVR after years of using the audiophile hyped units. It was a definite sound upgrade. I plug everything into it.