Stellar · Monoblock pair

Stellar™ M700 Monoblocks

Control and command over demanding speakers, at concert levels.

$3,498 / pair

Save up to $875 with a trade-in.

Options

Buy or audition near you

All dealers

30-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.

Designed for floorstanders, typical rooms

  • Power 350 W into 8Ω · 700 W into 4Ω
  • Design Mono pair, one per speaker
  • Stable down to 2Ω

What reviewers say

The Stellar M700 is my new favorite entry-level high-end power amplifier

SSoundStage!Roger Kanno, 2018

With the Stellar M700, my expectations were exceeded.

SStereophileRobert Deutsch, 2018

I was really able to hear the amplifiers' real attributes: astonishing and accurate bass, with sparkling highs that had an almost tube-like sound.

PPositive FeedbackPete Davey, 2018

Why choose it

A monoblock pair for less than $5,000

350 watts per channel into 8Ω, 700 into 4Ω, and stable down to 2Ω. Enough control to drive demanding speakers to concert levels.

Where it fits

The M700 is Stellar's best. Rated at 350 watts into 8Ω and 700 watts into 4Ω, a pair of these placed on any loudspeaker brings forth the lush, rich, and soul-satisfying power of two completely independent power blocks with headroom to spare. The listening experience with the M700 starts feet tapping and smiles breaking out.

Read more

The M700 is Stellar's best. Rated at 350 watts into 8Ω and 700 watts into 4Ω, a pair of these placed on any loudspeaker brings forth the lush, rich, and soul-satisfying power of two completely independent power blocks with headroom to spare. The listening experience with the M700 starts feet tapping and smiles breaking out. One listen to a hugely loud and complex musical passage effortlessly rendered by the M700 pair and you'll know you made the right choice.

A massively powerful engine, capable of effortlessly driving demanding loudspeakers to concert levels.

Design

How it's built

700 W
into 4Ω, per monoblock
350 W
into 8Ω
2Ω
stable
<0.1%
THD at rated power

01

Overview

Rated at 350 Watts into 8Ω and 700 Watts into 4Ω, the M700 combines the best of two worlds: ultra linear, high-current, Class D technology for the output stage; a discrete, Class A MOSFET based Analog Cell for the all-important input stage. The Stellar M700 captures the rich, full-bodied essence of recorded music and presents it to your loudspeakers with authority and grace, never a hint of glare or unnaturalness.

Read more

Rated at 350 Watts into 8Ω and 700 Watts into 4Ω, the M700 combines the best of two worlds: ultra linear, high-current, Class D technology for the output stage; a discrete, Class A MOSFET based Analog Cell for the all-important input stage. The Stellar M700 captures the rich, full-bodied essence of recorded music and presents it to your loudspeakers with authority and grace, never a hint of glare or unnaturalness. The M700 is faithful to the music like few amplifiers are. Listeners are constantly surprised at the width and depth of the M700's soundstage; its preservation of the smallest details in reverb, room acoustics, and musical overtones; its commanding presence without intrusion; its delicate handling of subtle shadings; its authority as it grabs hold of the loudspeaker and breezes through even the most complex musical passages.

02

The Analog Cell

Stellar's design imperatives -- affordable pricing and uncompromised sonics -- were major challenges solved by the invention of a unique new circuit christened the AnalogCell. Nothing in the design of a power amplifier is more important than its input stage when preserving music's finest nuances.

Read more

Stellar's design imperatives -- affordable pricing and uncompromised sonics -- were major challenges solved by the invention of a unique new circuit christened the AnalogCell. Nothing in the design of a power amplifier is more important than its input stage when preserving music's finest nuances. Knowing full well that the input stage determines sonic character, the AnalogCell has been employed to preserve the rich details found in music. The AnalogCell is the heart of the M700's musicality, where rich overlaid layers of music's inner details are preserved even in the most complex orchestral crescendos. As a proprietary, fully differential, zero feedback, discrete, Class A MOSFET circuit, hand-tuned to capture the smallest micro dynamics without sacrificing the loudest macro dynamics music has to offer, the AnalogCell makes all the difference in preserving music's magic.

03

Output Stage

The Stellar M700 has a massive power supply and ultra-linear, high-wattage power amplification stage based on a modern Class D ICE module. Class D output stages provide near-perfect linearity, low distortion, and high efficiency.

Read more

The Stellar M700 has a massive power supply and ultra-linear, high-wattage power amplification stage based on a modern Class D ICE module. Class D output stages provide near-perfect linearity, low distortion, and high efficiency. Modern Class D amplifiers, like the type used in Stellar, extend high frequencies to about 50kHz. Human hearing limitations are 20kHz, though most listeners rarely have hearing exceeding half that. Providing excellent frequency extremes, low distortion, high efficiency, high damping factor, and a generous and powerful output of 700 watts into the most common loudspeaker loads of 4Ω, the M700 is nothing short of breathtaking. The massively powerful nature of the M700 works well with any loudspeaker—big or small—providing huge amounts of headroom and effortless sound quality for even the most demanding orchestral crescendos.

Features

At a glance

  • Mono power amplifier pair
  • Zero-loss analog cell input
  • Powerful mosfet output stage
  • Rca single-ended input
  • XLR "true" balanced input
  • 350 watts per 8ω channel
  • 700 watts per 4ω channel
  • 2ω stable
  • < 0.1% THD 20 Hz 20khz at rated power
  • Damping factor = 1100
  • Front panel standby
  • Very little heat production
  • Dual, solid, copper plated output posts
  • 27 lbs

Specifications

Full specifications
Stellar M700 Mono Amplifier
Unit Weight13 lbs [5.9 kg] (each)
Unit Dimensions17”W x 3”H x 12”D (13"D w/connectors) 17”W x 6”H x 12”D (Stacked)
Shipping Weight16.5 lbs [7.5 kg] (each)
Shipping Dimensions22”W x 8”H x 17”D (each)
Color OptionsBlack Silver
Voltage Options (Factory set only)Japan 100V North America 120V Europe/Asia/Australia/New Zealand 230V
Mains Power InputsIEC C14
Idle Power Consumption23W
Accessories IncludedUS (NEMA 5-15P) (all versions) Schuko (CEE7/7) (230V version) UK (BS 1363) (230V version)
Audio InputsRCA (Unbalanced) XLR (Balanced)
Speaker OutputsCopper base nickel plated binding posts (2 pair)
DC Trigger Input3.5mm 5-15VDC
Warranty3 years parts and labor
Signal
Gain30.5dB +/-0.5dB
Sensitivity for rated output power1.6V
Noise1kHz@700 Watts < -105dB
Input impedanceUnbalanced 50KΩ Balanced 100KΩ
Output Impedance50Hz, 2.8VRMS <0.007Ω
Damping factor50Hz. 2.8VRMS 8Ω >1100 4Ω >550
Frequency Response2.8VRMS into 4Ω 10Hz – 20KHz +/- 0.5dB 10Hz – 50KHz +0.1/-3.0dB
THD&IM
1KHz, 1W/4Ω<0.02%
10-20KHz, 1W/4Ω<0.02%
10-50KHz, 1W/4Ω< 0.05% (90kHz BW)
1KHz, 87.5W/4Ω< 0.015%
Output Power120vac mains, 1kHz, 1% THD
8Ω350W minimum
4Ω700W minimum
2ΩStable for musical transients

Compare

How it compares

M800M400S400S200M1200M700This oneS300Strata
Price$29,998 / pair$17,998 / pair$9,999$7,999$6,998 / pair$3,498 / pair$1,999$3,499
Speakers & roomLarge rooms, any speakerLarge floorstanders, medium to large roomsFloorstanders, typical roomsBookshelf or efficient speakers, smaller roomsLarge or hard-to-drive speakersFloorstanders, typical roomsBookshelf speakers, smaller roomsAdd your speakers, bookshelf or floorstanding
Power400 W into 8Ω · 800 W into 4Ω200 W into 8Ω · 400 W into 4Ω200 W into 8Ω · 400 W into 4Ω, per channel100 W into 8Ω · 200 W into 4Ω, per channel600 W into 8Ω · 1,200 W into 4Ω350 W into 8Ω · 700 W into 4Ω140 W into 8Ω · 300 W into 4Ω, per channel—
DesignMono pair, one per speakerMono pair, one per speakerStereo, one boxStereo, one boxMono pair, one per speakerMono pair, one per speakerStereo, one boxIntegrated, one box
What sets it apart50 W of Class A bias: 99% of typical listening in pure Class A30 W of Class A bias10 W of Class A bias per channel10 W of Class A bias per channelVacuum tube input stageStable down to 2ΩDual mono, a separate power supply for each channelMoving magnet and moving coil phono, plus a Class A headphone amp
What's inside———————Streaming DAC, preamplifier, phono stage, amplifier

Build your system

What it pairs with

Trade Up and Save

Save up to $875 on your Stellar M700 Monoblocks

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.

  1. Tell us what you have. Press Start your trade-in and list your gear. Nearly any working hi-fi component counts, from any brand.
  2. Pay the adjusted price. At checkout you are charged only the price after your credit. Our sales team reviews every trade within 48 hours.
  3. Send yours back. We email a return label number. You have 30 days to ship your trade.
Start your trade-in
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

I've been putting source material through the rig with the PS Audio Stellar M700's Mono amps for a month and I have been consistently impressed with their musicality and get up and go.

These powerful PS Audio Stellar M700 Mono amplifiers are capable of effortlessly driving demanding loudspeaker loads to concert levels. This may be the first higher-priced component I can't live with out... but wait, there's more

GGreg Voth, Stereo Times2018
Read the full review

In the Stellar M700, PS Audio has designed excellent sounding mono amps that can be the foundation of a reasonably priced high-end audio system.

The analog input section is as expansive and natural sounding as the ICE amp modules are powerful and accurate. The resulting sound is a wonderful balance between expression and precision, allowing the amps to disappear within the audio chain. They clearly take on the signal...

GGary L Beard, Positive Feedback2018
Read the full review

There are many excellent-sounding amplifiers in this price range, but few can put out anywhere near as much power as the Stellar M700, and most of those that do don't sound as refined.

PS Audio says that the Stellar M700 is one of the most extraordinary monoblocks ever sold for less than 000/pair. I have to agree. The Stellar M700 is my new favorite entry-level high-end power amplifier

RRoger Kanno, SoundStage!2018
Read the full review

PS Audio has been on a roll.

That roll continues with the Stellar M700 power amplifier. I have had nothing but good experience with PS Audio products; still, with the Stellar M700, my expectations were exceeded. Having little sound of its own, the M700 delivered well-balanced reproduction that was always faithful to...

RRobert Deutsch, Stereophile2018
Read the full review

I could not fault the sound of the Gain Cell DAC -- its neutrality and honesty were captivating, leading to compelling listening.

During my time with it and the pair of M700s, I always felt they had total control over whatever music was thrown at them, in whatever format. From the understated nuance of an unaccompanied lute to the bombast of a symphony orchestra going full tilt,...

GGuy Lemcoe, The Audio Beat2018
Read the full review

I was really able to hear the amplifiers' real attributes: astonishing and accurate bass, with sparkling highs that had an almost tube-like sound.

How did they accomplish this in such a small footprint for such an amazing price? In the end I believe this is the top of the line in its price range. Nothing comes close—the sheer amount of power and sound quality that comes from these...

PPete Davey, Positive Feedback2018
Read the full review
Read all 7 reviews

All PS Audio components I've encountered (or owned) are incredibly well-built and the Stellar line is no exception.

They have a weight, look and feel that exudes quality belying their sub-,000 USD total cost and puts me in mind of gear I've reviewed costing double this price point. The PS Audio Stellar 'three-fer' proved itself to sound far more captivating, powerful, lyrical, musical...

RRafe Arnott, AudioStream2018

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 specialist

Outside 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 dealer

Hear it in your own room

Stellar M700 Monoblocks

$3,498 / pair

  • 30-day in-home trialThe PS Audio Home Experience. Love it or return it.
  • Save up to $875 with a trade-inCredit comes off the price at checkout.
Add to cartTrade up your gear and save
Silver, pair
Skip to product information
Silver, pair
href="/products/stellar-m700-power-amplifier?variant=43692326551842" class="link" >M700 Amplifier Pair

M700 Amplifier Pair

$3,498.00
Shipping calculated at checkout.

Join the waiting list

Leave your email and we'll let you know if one becomes available.

Details
Enjoy an unheard of level of control and command from your loudspeakers with the Stellar M700, one of the most extraordinary under $5,000 power amplifier pair ever crafted. An affordable, high-value, full-sized mono power amplifier, the M700 is a real powerhouse that betters just about any other monoblock pair in the world.
Home Audition

Get 30 days to listen to your M700 Amplifier Pair and see if you like it. If not, send it back.

Shipping

UPS Ground USA
FedEx International

M700 Amplifier Pair

At home

Where it disappears into the music.

Enjoy an unheard of level of control and command from your loudspeakers with the Stellar M700, one of the most extraordinary under $5,000 power amplifier pair ever crafted. With its mighty 700 watt engine connected to any sized loudspeaker, the M700 monoblocks deliver extraordinarily effortless linear headroom that seems to go on forever. Dynamics like you've rarely experienced before. Slam, control, toe-tapping pacing, and music’s subterranean depths are effortlessly delivered to any loudspeaker from the most efficient to the most demanding. Revel in rich layers of fine, full detail you might have been missing before Stellar. Marvel at the deep, extraordinary, wall-to-wall soundstage. Control your loudspeakers as never before. Effortless. Lush. Stellar.

Overview

Rated at 350 Watts into 8Ω and 700 Watts into 4Ω, the M700 combines the best of two worlds: ultra linear, high-current, Class D technology for the output stage; a discrete, Class A MOSFET based Analog Cell for the all-important input stage. The Stellar M700 captures the rich, full-bodied essence of recorded music and presents it to your loudspeakers with authority and grace, never a hint of glare or unnaturalness. The M700 is faithful to the music like few amplifiers are. Listeners are constantly surprised at the width and depth of the M700's soundstage; its preservation of the smallest details in reverb, room acoustics, and musical overtones; its commanding presence without intrusion; its delicate handling of subtle shadings; its authority as it grabs hold of the loudspeaker and breezes through even the most complex musical passages.

The Analog Cell

Stellar's design imperatives -- affordable pricing and uncompromised sonics -- were major challenges solved by the invention of a unique new circuit christened the AnalogCell. Nothing in the design of a power amplifier is more important than its input stage when preserving music's finest nuances. Knowing full well that the input stage determines sonic character, the AnalogCell has been employed to preserve the rich details found in music. The AnalogCell is the heart of the M700's musicality, where rich overlaid layers of music's inner details are preserved even in the most complex orchestral crescendos. As a proprietary, fully differential, zero feedback, discrete, Class A MOSFET circuit, hand-tuned to capture the smallest micro dynamics without sacrificing the loudest macro dynamics music has to offer, the AnalogCell makes all the difference in preserving music's magic.

Output Stage

The Stellar M700 has a massive power supply and ultra-linear, high-wattage power amplification stage based on a modern Class D ICE module. Class D output stages provide near-perfect linearity, low distortion, and high efficiency. Modern Class D amplifiers, like the type used in Stellar, extend high frequencies to about 50kHz. Human hearing limitations are 20kHz, though most listeners rarely have hearing exceeding half that. Providing excellent frequency extremes, low distortion, high efficiency, high damping factor, and a generous and powerful output of 700 watts into the most common loudspeaker loads of 4Ω, the M700 is nothing short of breathtaking. The massively powerful nature of the M700 works well with any loudspeaker—big or small—providing huge amounts of headroom and effortless sound quality for even the most demanding orchestral crescendos.

What owners and reviewers say

I've been putting source material through the rig with the PS Audio Stellar M700's Mono amps for a month and I have been consistently impressed with their musicality and get up and go. These powerful PS Audio Stellar M700 Mono amplifiers are capable of effortlessly driving demanding loudspeaker l...
Greg Voth, Stereo Times · Read full review
In the Stellar M700, PS Audio has designed excellent sounding mono amps that can be the foundation of a reasonably priced high-end audio system. The analog input section is as expansive and natural sounding as the ICE amp modules are powerful and accurate. The resulting sound is a wonderful balan...
Gary L Beard, Positive Feedback · Read full review
There are many excellent-sounding amplifiers in this price range, but few can put out anywhere near as much power as the Stellar M700, and most of those that do don't sound as refined. PS Audio says that the Stellar M700 is one of the most extraordinary monoblocks ever sold for less than 000/pair...
Roger Kanno, SoundStage! · Read full review
PS Audio has been on a roll. That roll continues with the Stellar M700 power amplifier. I have had nothing but good experience with PS Audio products; still, with the Stellar M700, my expectations were exceeded. Having little sound of its own, the M700 delivered well-balanced reproduction that wa...
Robert Deutsch, Stereophile · Read full review
I could not fault the sound of the Gain Cell DAC -- its neutrality and honesty were captivating, leading to compelling listening. During my time with it and the pair of M700s, I always felt they had total control over whatever music was thrown at them, in whatever format. From the understated nua...
Guy Lemcoe, The Audio Beat · Read full review
I was really able to hear the amplifiers' real attributes: astonishing and accurate bass, with sparkling highs that had an almost tube-like sound. How did they accomplish this in such a small footprint for such an amazing price? In the end I believe this is the top of the line in its price range....
Pete Davey, Positive Feedback · Read full review
All PS Audio components I've encountered (or owned) are incredibly well-built and the Stellar line is no exception. They have a weight, look and feel that exudes quality belying their sub-,000 USD total cost and puts me in mind of gear I've reviewed costing double this price point. The PS Audio S...
Rafe Arnott, AudioStream

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.

Try it at home $3,498.00
Take it home

Overview

Rated at 350 Watts into 8Ω and 700 Watts into 4Ω, the M700 combines the best of two worlds: ultra linear, high-current, Class D technology for the output stage; a discrete, Class A MOSFET based Analog Cell for the all-important input stage. The Stellar M700 captures the rich, full-bodied essence of recorded music and presents it to your loudspeakers with authority and grace, never a hint of glare or unnaturalness. The M700 is faithful to the music like few amplifiers are. Listeners are constantly surprised at the width and depth of the M700's soundstage; its preservation of the smallest details in reverb, room acoustics, and musical overtones; its commanding presence without intrusion; its delicate handling of subtle shadings; its authority as it grabs hold of the loudspeaker and breezes through even the most complex musical passages.

The Analog Cell

Stellar's design imperatives -- affordable pricing and uncompromised sonics -- were major challenges solved by the invention of a unique new circuit christened the AnalogCell. Nothing in the design of a power amplifier is more important than its input stage when preserving music's finest nuances. Knowing full well that the input stage determines sonic character, the AnalogCell has been employed to preserve the rich details found in music. The AnalogCell is the heart of the M700's musicality, where rich overlaid layers of music's inner details are preserved even in the most complex orchestral crescendos. As a proprietary, fully differential, zero feedback, discrete, Class A MOSFET circuit, hand-tuned to capture the smallest micro dynamics without sacrificing the loudest macro dynamics music has to offer, the AnalogCell makes all the difference in preserving music's magic.

Output Stage

The Stellar M700 has a massive power supply and ultra-linear, high-wattage power amplification stage based on a modern Class D ICE module. Class D output stages provide near-perfect linearity, low distortion, and high efficiency. Modern Class D amplifiers, like the type used in Stellar, extend high frequencies to about 50kHz. Human hearing limitations are 20kHz, though most listeners rarely have hearing exceeding half that. Providing excellent frequency extremes, low distortion, high efficiency, high damping factor, and a generous and powerful output of 700 watts into the most common loudspeaker loads of 4Ω, the M700 is nothing short of breathtaking. The massively powerful nature of the M700 works well with any loudspeaker—big or small—providing huge amounts of headroom and effortless sound quality for even the most demanding orchestral crescendos.

Recommended products

Specifications

Stellar M700 Mono Amplifier

Unit Weight 13 lbs [5.9 kg] (each)
Unit Dimensions 17”W x 3”H x 12”D (13"D w/connectors)
17”W x 6”H x 12”D (Stacked)
Shipping Weight 16.5 lbs [7.5 kg] (each)
Shipping Dimensions 22”W x 8”H x 17”D (each)
Color Options Black
Silver
Voltage Options
(Factory set only)
Japan 100V
North America 120V
Europe/Asia/Australia/New Zealand 230V
Mains Power Inputs IEC C14
Idle Power Consumption 23W
Accessories Included US (NEMA 5-15P) (all versions)
Schuko (CEE7/7) (230V version)
UK (BS 1363) (230V version)
Audio Inputs RCA (Unbalanced)
XLR (Balanced)
Speaker Outputs Copper base nickel plated binding posts (2 pair)
DC Trigger Input 3.5mm 5-15VDC
Warranty 3 years parts and labor

Signal

Gain 30.5dB +/-0.5dB
Sensitivity for rated output power 1.6V
Noise 1kHz@700 Watts < -105dB
Input impedance Unbalanced 50KΩ
Balanced 100KΩ
Output Impedance 50Hz, 2.8VRMS <0.007Ω
Damping factor 50Hz. 2.8VRMS
8Ω >1100
4Ω >550
Frequency Response 2.8VRMS into 4Ω
10Hz – 20KHz +/- 0.5dB
10Hz – 50KHz +0.1/-3.0dB

THD&IM

1KHz, 1W/4Ω <0.02%
10-20KHz, 1W/4Ω <0.02%
10-50KHz, 1W/4Ω < 0.05% (90kHz BW)
1KHz, 87.5W/4Ω < 0.015%

Output Power

120vac mains, 1kHz, 1% THD
8Ω 350W minimum
4Ω 700W minimum
2Ω Stable for musical transients