Tuesday, July 7, 2026
Home Review Puritan PSM 156 power conditioner

Review Puritan PSM 156 power conditioner

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Pros

  • Nice compact design
  • Definitely filters out junk
  • Low and high-current

Cons

  • Very mixed results...
  • Both measurement-wise,
  • ... as well as sound-wise.

Price: € 1740

Build quality
Usability
Sound
Price
Puritan PSM 156

The test setup

We tested the Puritan PSM 156 in our reference system. Like the Yeti Standard filter, we mainly used the Sonnet Pasithea, as the Pass Labs X150.8 is too heavy and the reclocker / ref-clock are not useful, as they need to stabilize.

The test setup

Type test
Single Test
Accessory type
Energy filter / regenerator
Suitable for
  • Sources (Low current)
  • Amplifiers (High current)
Number of connections
6
Maximum load
  • 3450 watt
  • 15 Ampere
Dimensions
  • Width: 43 cm
  • Depth: 23 cm
  • Height: 11 cm
Production country
UK
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14 Comments
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Oldest Most Voted
Brandon
4 months ago

Was this unit burned in or brand new?

William Turner
1 year ago

Slightly off topic, but has anyone had any burning in experience? After nearly 17 months my listening room is finally done. All my new products such as Furutech Rhodium forks, Rhodium plugs and Synergistic research are ca 60 hours on burn in. Everything sound shit, thin, and very bright. Also my system had been switched of for 17 months. I’ve heard the Rhodium burn in period can be very tough psychologically.

William Turner
Reply to  Jaap Veenstra
1 year ago

Do you mean that Rhodium sucks even after burn in??

William Turner
Reply to  Jaap Veenstra
1 year ago

Interesting! Rhodium is all the rage provided you can with stand the long burn in period. Guess i’ll have to waste money on buying gold and silver and find out what i like for myself. The down side of an audiohpile, it’s costs to try all the fun stuff.

1 year ago

Was this a new unit or was it a show model/already used unit? I ask this because this puritan does need a lot of hours for it to be broken into. If you test a new unit vs a already used one you can clearly hear major changes on both. By this review it does look like this puritan can produce very mixed results depending on the setup. On my case, i’ve prefered the puritan to conditioners up to 6K, including two much more expensive isotek models.

Eric Rhodes
2 years ago

This unit smokes my relatively expensive Furman.

Bill OBrien
2 years ago

Interesting review/measurements. I’ve had very good experiences with Puritan conditioners across the board. I’ve found they improve with an outboard ground—I use their CityGround since I live in a condo. The ground is inexpensive enough that I consider it a mandatory part of the system. It makes a difference—it would be interesting for you to use their ground and see if it resolves your issues.

Jacques
2 years ago

Hello,
You say “reclocker / ref-clock are not useful, because they need to stabilise”.
Could you explain?
Thank you
Jacques

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