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Isolation Transformers

My wife and have sold our home and are renting for the next couple of years. Therefore, I don't have the luxury of re-wiring, dedicated lines etc. I am looking to clean up the AC supply, minimize the effects of other household circuits and get some surge protection.  After quite a bit of reading I have narrowed my selection down to an Equi=Tech 2RQ or a Torus RM20. I can buy either unit for a 30 day trial/refund but would like to make a good choice to start.
My delima is this. The Equitech offers balanced power on the output which would be effective at canceling reactive currents between my audio components. It also offers filtered outlets for digital gear and would isolate my entire system from the rest of the home with its own ground reference on the center tap of the secondary. However, it does not have any surge suppression built in other than the transformer itself.
The Torus on the other hand offers SMSS which gives me peace of mind. It also has Plitron NBT for line filtering. However it lacks the balanced output, and therefore would not isolate my system from whatever grounding this house may, or may not have. The Torus also does not offer any filtered outlets for digital gear.
My system is: Klimax LP12>Erika Phono>Pass XP-22>Pass X250.8>Thiel CS2.3  with a MacBook>Chord MoJo>Pass XP-22 for digital files. I will upgrade the digital end some day so I like the option of digital outlets with the Equitech.
If anyone has experience with these isolation transformers I would appreciate some direction. Thanks

Bruce

brskie
erik_squires
15,647 posts
 
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.
erik_squires
15,647 posts
 
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.
georgehifi's avatar
georgehifi
10,312 posts
 
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

Cheers George

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