Stellar · AC regenerator
Stellar™ PowerPlant 3
New voices, new harmonics and a renewed sense of musicality.
$2,999
Save up to $750 with a trade-in.
Options
Buy or audition near you
All dealers30-day in-home trial
The PS Audio Home Experience
Try it risk-free for 30 days in your own system. Love it or return it.
- Outside the US? Find your local dealer
Designed for sources and small systems
- Output 300 W · 900 W peak
- Outlets (US) 6
- Wall input Standard 15 amp
- Screen None. Remote control
What reviewers say
What really matters is that it can transform – yes, transform – the sound from source components, DACs and headphone amplifiers. Wow.
The value-priced Stellar PowerPlant 3 is without a peer
The PS Audio Stellar Power Plant 3 delivers an immediate and easily noticeable improvement in overall sound quality.
Why choose it
Regenerated power, sized for your sources
300 watts of continuous regenerated power, 900 watts peak, for sources and small systems. Six outlets, and overbuilt surge and spike protection.
Where it fits
The P3 is the perfect companion for improving system performance and ensuring a safe environment for you Hi-Fi system. Providing 300 watts of continuous power output and peaks of 1000 watts, the P3 is just right for source gear or an entire systems running small to medium class AB amps or larger high-efficiency Class D amps like the Stellar M700 monoblocks. The P3 will bring forth all that's possible from your HiFi system, ensuring you get the same great performance every time you listen.
Design
How it's built
The Stellar P3 PowerPlant features an ultra-low impedance analog AC power amplifier, pure DSD FPGA based analog sine wave regenerator, and low distortion high-dynamic-peak-capable outputs found only in PS Audio PowerPlants. Designed with elegant simplicity in mind, the P3 is a plug and play device that will provide you with perfect power and worry free protection from surges, spikes, and ugly power without any fuss.
Read the full design story
The Stellar P3 PowerPlant features an ultra-low impedance analog AC power amplifier, pure DSD FPGA based analog sine wave regenerator, and low distortion high-dynamic-peak-capable outputs found only in PS Audio PowerPlants. Designed with elegant simplicity in mind, the P3 is a plug and play device that will provide you with perfect power and worry free protection from surges, spikes, and ugly power without any fuss. Regulate, remove distortion, and get better performance.
- 300 W
- continuous
- 900 W
- peak
- 6
- US outlets
- 3x
- lower impedance than the P5
01
Overview
The Stellar P3 PowerPlant takes your incoming AC power and converts it to DC, similar to what comes out of a battery, and then, with patented PS Audio technology, regenerates and produces new sine-wave-perfect, regulated, high-current AC power. In the process of regeneration, any problems commonly found on your power line, such as low voltage, distorted waveforms, sagging power, flat-topping, and noise are eliminated.
Read more
The Stellar P3 PowerPlant takes your incoming AC power and converts it to DC, similar to what comes out of a battery, and then, with patented PS Audio technology, regenerates and produces new sine-wave-perfect, regulated, high-current AC power. In the process of regeneration, any problems commonly found on your power line, such as low voltage, distorted waveforms, sagging power, flat-topping, and noise are eliminated. The input voltage to the PowerPlant is fully protected by state-of-the-art clamping devices and the output is fully regulated so even large voltage swings that would normally damage connected equipment are made safe by either clamping or regulating. With your system powered directly from the ouput of the Stellar P3, dynamics and openness are breathtaking. New voices, new harmonics, and a renewed sense of musicality are yours the moment the P3 starts up.This is one of the most important pieces of audio equipment you can own, building a firm and reliable foundation for your system that will serve you for years to come. Not suited for class A or A/B amplification in 220V models.
02
Output
The P3 takes in your home's noisy, distorted, and unregulated AC and outputs pure and perfect power that dramatically enhances sound quality. It does this by rebuilding the AC, lowering output impedance, and regulating the voltage.
Read more
The P3 takes in your home's noisy, distorted, and unregulated AC and outputs pure and perfect power that dramatically enhances sound quality. It does this by rebuilding the AC, lowering output impedance, and regulating the voltage. Low output impedance is critical to maintaining a dynamic presentation. Powering equipment through a passive power conditioner only worsens the problem and should be avoided. The Power Plant, on the other hand, has such low output impedance (0.008Ω vs. typical 0.4Ω) that even the hungriest of amplifiers won’t be starved for clean AC power. When your amp is asked to produce loud orchestral levels, you want to make sure it has all the power it needs and only a Power Plant provides a constant output regardless of the dynamic demands of equipment or your neighbors. Power Plants also generate new waveforms that enhance the capabilities of your equipment. MultiWave extends the peak charging time of the sine wave so connected equipment has more energy storage and less power supply ripple. The results are dramatic: a bigger more musically accurate soundstage than with a simple sine wave.
03
Protection
An electrical surge, or spiked transient, is an intense, short-duration voltage increase that travels through electrical wiring in our homes. It can severely damage connected equipment.
Read more
An electrical surge, or spiked transient, is an intense, short-duration voltage increase that travels through electrical wiring in our homes. It can severely damage connected equipment. Shielding devices from these potential electrical problems is mandatory if we're to protect our investment and ensure the safety of our homes. These electrical transients are not the only potentially damaging problems faced by our sensitive audio systems. There are also sustained over-voltage conditions that many surge suppression devices will not be able to protect equipment from. Owners who have invested in a Power Plant can rest assured their connected equipment will be safe from any power line event such as over voltage, under voltage, surges, spikes and potentially threatening problems. The input voltage to the Power Plant is fully protected by state-of-the-art clamping devices and the output of the Power Plant is fully regulated so even large voltage swings that would normally damage connected equipment are made safe by either clamping or regulating. In most cases, connected equipment enjoys the protection and performance benefits of fully regulated power, even under extreme circumstances.
Features
At a glance
- Built in boulder
- 300 watts continuous output
- 500 watts short-term output
- 900 watts peak output
- 1000 watts filtered output
- 3x lower impedence than p5 power plant
- 6x outlets US
- 15amp AC input US
- Range 95 – 145 vac US
- 4 eu/au/gr/uk outlets
- 10amp AC input eu/au/gr/uk
- 230 volt regulated eu/au/gr/uk
- Range 200 –285vac eu/au/gr/uk
- 100% regenerated AC
Specifications
Full specifications
| Environment Specification | U.S./Japan / Europe/Asia |
|---|---|
| Location | Indoor use only / Indoor use only |
| Duty Cycle | Suitable for continuous operation / Suitable for continuous operation |
| Moisture Sensitivity | Not sealed against moisture / Not sealed against moisture |
| Operating Humidity | <80%rh / <80%rh |
| Storage Temperature | -40C to +40C / -40C to +40C |
| Operating Temperature | 0C to 40C / 0C to 40C |
| Electrical Supply Nominal Rating | US - 120V 15A 60Hz JP - 100V 15A 50/60Hz / 230V 10A 50/60Hz |
| Instrument Specification | U.S./Japan / Europe/Asia |
| Unit Dimensions | 17” W x 12” D x 3.25” H (43cm x 30.48cm x 8.255cm) / 17” W x 12” D x 3.25” H (43cm x 30.48cm x 8.255 cm) |
| Unit Weight | 31.4 lbs ( 14.24 kg) / 31.4 lbs ( 14.24 kg) |
| Shipping Dimensions | 22” x 17” x 8” (55.88cm x 43.18cm x 20.32cm) / 17” W x 12” D x 3.25” H (43cm x 30.48cm x 8.255 cm) |
| Shipping Weight | 39.4 lbs (17.87 kg) / 39.4 lbs (17.87 kg) |
| Nominal Input Voltage | US - 108 – 145 VAC JP - 85 – 125 VAC / 200 –270 VAC |
| Maximum Continuous Load | US - 300VA JP - 300VA / 300VA |
| Maximum Peak Load (30 seconds) | 1000VA / 1000VA |
| Voltage Regulation | <0.1% / <0.2% |
| Typical Output THD | <0.3% / <0.3% |
| Output Impedance | <0.008 ohm / <0.008 ohm |
| Efficiency @ 300VA | >85% / >85% |
| Input Frequency | 45 – 65 Hz / 45 – 65 Hz |
| Energy Dissipation | 680J / 850J |
| Peak Current Surge | 60,000A / 60,000A |
| Max Surge Voltage | 6,000V / 6,000V |
| Clamp Level | 340V / 800V |
| DC Trigger | None / None |
| Standby Power Consumption | 25 Watts / 25 Watts |
Compare
How it compares
| P3This one | P12 | P15 | P20 | |
|---|---|---|---|---|
| Price | $2,999 | $5,999 | $7,999 | $9,999 |
| Powers | Sources and small systems | Whole system, medium to large amps | Whole system, more amp headroom | Whole system, the largest amps |
| Output | 300 W · 900 W peak | 1,200 VA | 1,500 VA | 2,000 VA · 3,600 W peak |
| Outlets (US) | 6 | 8 | 10 | 16 |
| Wall input | Standard 15 amp | Standard 15 amp | Standard 15 amp | 15 or 20 amp |
| Screen | None. Remote control | 4.3-inch color touchscreen | Color touchscreen | 7-inch color touchscreen |
Trade Up and Save
Save up to $750 on your Stellar PowerPlant 3
Your old gear is worth more than you think. PS Audio credits the full original retail value of what you trade, up to the limit, straight off your new purchase.
- Tell us what you have. Press Start your trade-in and list your gear. Nearly any working hi-fi component counts, from any brand.
- Pay the adjusted price. At checkout you are charged only the price after your credit. Our sales team reviews every trade within 48 hours.
- Send yours back. We email a return label number. You have 30 days to ship your trade.
The fine print
What we accept. Nearly any hi-fi make and model at component level: a preamplifier, power amplifier, DAC, phono stage, loudspeaker pair, turntable, headphones or CD transport. It must work and be in respectable cosmetic condition.
What we don't. Broken or non-working products, and most accessories, phono cartridges, power cables and interconnects. Exceptions can be made based on value.
Several items? Yes. Trade as many as you like, up to the credit cap. Use "Add another" on the Trade Up form.
Not sure it qualifies? Call 800-PSAUDIO (800-772-8346) or email sales@psaudio.com, and a real person will answer.
Reviews
More reviews
The PS Audio Stellar Power Plant 3 delivers an immediate and easily noticeable improvement in overall sound quality.
PS Audio has a winner.
If you’re looking for clean power, there is no way to go wrong here.
What really matters is that it can transform – yes, transform – the sound from source components, DACs and headphone amplifiers.
Wow.
The sonic benefits to the Stellar Power Plant 3 are clear and palpable.
I can say it is the single best audio purchase that I’ve ever made…
I hear space around instruments where before there was none.
Music has both energy and ease.
Read all 8 reviews
The soundstage, already great, is wider, taller and deeper and with greater separation between instruments.
The value-priced Stellar PowerPlant 3 is without a peer
Questions for a specialist?
We're happy to help with system matching and upgrades. Talk to a real person at 800-PSAUDIO, Monday to Friday, 8:30 to 5 Mountain Time, or email sales@psaudio.com.
Contact a specialistOutside the US?
Buy or audition through an authorized PS Audio dealer in your country. Can't find one near you? Contact us directly.
Find your local dealerHear it in your own room
Stellar PowerPlant 3
$2,999
- 30-day in-home trialThe PS Audio Home Experience. Love it or return it.
- Save up to $750 with a trade-inCredit comes off the price at checkout.
Stellar PowerPlant 3
Details
Home Audition
Get 30 days to listen to your Stellar PowerPlant 3 and see if you like it. If not, send it back.
Shipping
UPS Ground USA
FedEx International
Power regenerator
Stellar PowerPlant 3
Our most affordable AC regenerator, the P3 protects, purifies, and powers sources, as well as small to medium sized systems.







Overview
Output
Protection
What owners and reviewers say
The PS Audio Stellar Power Plant 3 delivers an immediate and easily noticeable improvement in overall sound quality.
PS Audio has a winner. If you’re looking for clean power, there is no way to go wrong here.
What really matters is that it can transform – yes, transform – the sound from source components, DACs and headphone amplifiers. Wow.
The sonic benefits to the Stellar Power Plant 3 are clear and palpable.
I can say it is the single best audio purchase that I’ve ever made…
I hear space around instruments where before there was none. Music has both energy and ease.
The soundstage, already great, is wider, taller and deeper and with greater separation between instruments.
The value-priced Stellar PowerPlant 3 is without a peer
Trade up to it
You do not have to have bought from us before, and it does not have to be ours. Trade in almost any component from any brand and we credit its full original retail value against this one — up to a per-component cap that appears the moment you start a trade. See what yours is worth.
Hear it first
Every piece comes with a 30-day in-home trial. PMG Signature pieces get 60 days, with return shipping on us.
Not for sale
We build these in Boulder, Colorado, and we are glad to show our work. Paul answers questions on video most weekdays, and the factory is open to visitors.

At home
Where it disappears into the music.
Overview
Output
Protection
Recommended products
Specifications
Environment Specification |
U.S./Japan |
Europe/Asia |
| Location | Indoor use only | Indoor use only |
| Duty Cycle | Suitable for continuous operation | Suitable for continuous operation |
| Moisture Sensitivity | Not sealed against moisture | Not sealed against moisture |
| Operating Humidity | <80%rh | <80%rh |
| Storage Temperature | -40C to +40C | -40C to +40C |
| Operating Temperature | 0C to 40C | 0C to 40C |
| Electrical Supply Nominal Rating | US - 120V 15A 60Hz JP - 100V 15A 50/60Hz |
230V 10A 50/60Hz |
Instrument Specification |
U.S./Japan |
Europe/Asia |
| Unit Dimensions | 17” W x 12” D x 3.25” H (43cm x 30.48cm x 8.255cm) | 17” W x 12” D x 3.25” H (43cm x 30.48cm x 8.255 cm) |
| Unit Weight | 31.4 lbs ( 14.24 kg) | 31.4 lbs ( 14.24 kg) |
| Shipping Dimensions | 22” x 17” x 8” (55.88cm x 43.18cm x 20.32cm) | 17” W x 12” D x 3.25” H (43cm x 30.48cm x 8.255 cm) |
| Shipping Weight | 39.4 lbs (17.87 kg) | 39.4 lbs (17.87 kg) |
| Nominal Input Voltage | US - 108 – 145 VAC JP - 85 – 125 VAC |
200 –270 VAC |
| Maximum Continuous Load | US - 300VA JP - 300VA |
300VA |
| Maximum Peak Load (30 seconds) | 1000VA | 1000VA |
| Voltage Regulation | <0.1% | <0.2% |
| Typical Output THD | <0.3% | <0.3% |
| Output Impedance | <0.008 ohm | <0.008 ohm |
| Efficiency @ 300VA | >85% | >85% |
| Input Frequency | 45 – 65 Hz | 45 – 65 Hz |
| Energy Dissipation | 680J | 850J |
| Peak Current Surge | 60,000A | 60,000A |
| Max Surge Voltage | 6,000V | 6,000V |
| Clamp Level | 340V | 800V |
| DC Trigger | None | None |
| Standby Power Consumption |
25 Watts |
25 Watts |