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DirectStream Power Plant 15

Reference standard AC power delivery and protection

Built in Boulder
All units handmade in Boulder, Colorado.

Purify, protect, regulate, and rebuild unrestricted new power from old. The DirectStream P15 Power Plant is the gold standard for safety, reliability, and high-performance AC power regeneration. The P15 improves micro and macro dynamics, audio purity, instrumental separation, soundstage width and depth, and lowers background noise for any connected equipment. The P15 is the successor to the venerable P10 Power Plant, a tireless performer faithfully powering thousands of high-performance audio and video system around the world for nearly a decade. The P15 has been completely redesigned from the ground up with three times lower output impedance, lower distortion, a new FPGA based DSD sine wave generator, and an improved level of performance never before attained by any Power Plant of its size. If high-performance audio or video is your goal, there’s no better foundation for any system than a Power Plant AC regenerator.

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We always strive for same-day shipping but at this time, orders may take as long as one-week to ship.

DirectStream Power Plant 15

Product Description

The DirectStream Power Plant 15 is the next generation of AC power regeneration. It features an all new analog power amplifier and FPGA based sine wave generator based on pure, clean, analog DSD (PDM).  The P15 has 5 separate regenerated zones, buss bar delivery system, and 1500 watts of pure regenerated power. From medium to large power amplifiers to the smallest pieces of source equipment, the P15 will work magic on your system’s performance. Expect far better micro and macro dynamics as well as a cleaner, lower noise background.

Don’t starve your music or risk damaging your equipment. A P15 gives you greatly improved performance and safety from just plugging into the wall socket and far better dynamics, bass and a much bigger, open soundstage than any power conditioner on the market. Why settle for anything but a Power Plant? Take one home and try it today.

This product qualifies for our risk free in-home trial in the continental United States when purchased directly from PS AudioAnd, trade in and save. Let us repurchase your old equipment at its full and original retail price. We’ll give it a good home and make sure you have the best power in the world. Just click the green Trade In and Save button above these words to take advantage.

  • Built in Boulder
  • 1500 VA output
  • Passively cooled
  • 3X lower impedance than P10
  • Can deliver up to 50 amps peak from internal storage
  • 10 outlets US
  • 15 amp AC input US
  • 120 volt regulated US
  • Range 95 – 145 VAC US
  • 9 EU/AU/GR/UK outlets
  • 10 amp AC input EU/AU/GR/UK
  • 230 volt Regulated EU/AU/GR/UK
  • Range 200 –285VAC EU/AU/GR/UK
  • 100% regenerated AC
  • MultiWave
  • Pure Sine Wave
  • Integrated oscilloscope
  • THD meter
  • Improvement meter
  • Power meter
  • Control over LAN
  • Adjustable output voltage
  • Color touchscreen
  • Field upgradable
  • 82 pounds boxed
  • 17W x 8.5H x 14D

Tone Audio

Jeff Dorgay

I was shocked at how many albums in the junk bin became much more enjoyable. The amount of low level detail revealed by clean power is incredible. That alone is worth the price asked of the P15. Imagine getting another thousand LPs for free that you now love. What’s that worth to you?

The effect on analog and digital sources is equally bold, yet different. Every DAC plugged into the P15 instantly displays less harshness and glare – all the stuff you hate about digital, is now either gone or greatly diminished. Every phonostage exhibited a lower noise floor, especially those with vacuum tubes under the cover, allowing more of the finest musical details to come through. I guarantee you will have at least a few “wow, I never heard that” moments with the P15.

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Positive Feedback

Greg Petan

Living in downtown NYC, the juice that flows from my outlets varies literally from hour to hour.
Voltage spikes and sags have been measured with deviations that vary from moderate to, "That can't be right." [With my demanding Class A amps] I needed two P20s, along with the P15 to handle all the other components' power needs.

The effect of all this effort to deliver clean AC power was not subtle. Every aspect of the sound
is touched, elevated, and refined. Everything we seek in great sound, dimension, depth and space, color, dynamics, transparency, and detail are boosted in seeming equal parts….. Space and dimension are bolstered by the quiet and greater contrast between, and around each bit of sound. All the small incremental improvements add up to what is essentially art in the form of reproduced music.

The P20 and P15 series products connect live and reproduced sound in a way that cannot be achieved any other way if dirty power is a culprit, and dirty power is almost always a culprit. If you are planning to build a great system, addressing the very element that brings these inanimate boxes to life, these products should be a priority. Your music will thank you.

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Customer testamonial

Kent Tager

With the P15 I expected a nice jump like the P10 was over the P5. WRONG. It was not another move up in sound, it was transformational. Audio memory is a very iffy thing because there are so many factors that come into play, but I do not recall any change I have made in years, not even moving up in speakers, that has done what the P15 has done. The sound stage is so much bigger and so three dimensional, the detail is through the roof better without being brighter or more artificially detailed like some amps and preamps might do. It is both more nuanced and more powerful. The excitement of the music is so much more palpable and the sheer joy of listening to Jen Chapin and the Rosetta Trio, Fourplay, Fleetwood Mac, Mark Knopfler, Brahms, and the others that have been played since I got this new beast is way better. It took about 48 hours for it really to get going, but boy oh boy what it has done to my system is amazing/transformational.

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After spending thousands on upgrading sources, amps, speakers etc, the biggest single improvement i have ever had was plugging everything into the P15.
Don’t care for all the numbers too much but know what my ears hear and am now a total believer that these Power Plants should be a must if you want to get the best out of your system.

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Power Plants are available worldwide at your country’s proper voltage rating. Outlets include US, UK, German (Shuko) and Australian. For inquiries concerning different outlets or voltages outside the United States and Canada, please contact your country’s dealer or distributor, or fill out the question form on this page.

Environment Specification



LocationIndoor use onlyIndoor use only
Duty CycleSuitable for continuous operationSuitable for continuous operation
Moisture SensitivityNot sealed against moistureNot sealed against moisture
Operating Humidity<80%rh<80%rh
Storage Temperature-40C to +40C-40C to +40C
Operating Temperature0C to 40C0C to 40C
Max Operating Altitude12,000’ (3500m)12,000’ (3500m)
Electrical Supply Nominal Rating120V 15A 60Hz US
100V 15A 50/60 Hz JP
230V 10A 50/60Hz

Instrument Specification

Unit Dimensions17” W x 14” D x 8.5” H (43cm W x 36cm D x 21.5 cm H)17” W x 14” D x 8.5” H (43cm W x 36cm D x 21.5 cm H)
Unit Weight73 lbs ( 33kg)73 lbs ( 33kg)
Shipping Dimensions23” x 20.5” x 13.5” ( 58cm x 52cm x 34cm)23” x 20.5” x 13.5” ( 58cm x 52cm x 34cm)
Shipping Weight82 lbs (38kg)82 lbs (38kg)
Nominal Input Voltage95 – 145 VAC200 –285VAC
Maximum Continuous Load1200VA1500VA
Maximum Peak Load3600VA3600VA
Voltage Regulation1V1V
Output Distortion (Resistive Load)<0.5%
0.1% typical
0.2% typical
Output Distortion (Reactive Load)<0.5%
0.1% typical
0.2% typical
Output Impedance<0.008 ohm<0.008 ohm
Noise Reduction100kHz – 2MHz >80dB100kHz – 2MHz >80dB
Efficiency @1200 VA>85%>85%
Standby Power Consumption
Input Frequency45 – 65 Hz45 – 65 Hz
Under Voltage LimitContinuous -10% of setting 15 sec duration -15% of settingContinuous -10% of setting 15 sec duration -15% of setting
Over Voltage LimitContinuous 5% of setting 15 sec duration 10% of settingContinuous 5% of setting 15 sec duration 10% of setting
Energy Dissipation2440J3670J
Peak Current Surge144,000A84,000A
Max Surge Voltage6,000V6,000V
Clamp Level330V800V
DC Trigger ConfigurationTip PositiveTip Positive
DC Trigger Voltage5 – 15Vdc5 – 15Vdc


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