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PS Audio M700 Amplifier
The Stellar M700 mono amplifiers are a massively powerful engine capable of effortlessly driving demanding loudspeaker loads to concert levels.
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.
Design
The hybrid approach used in the Stellar M700 Power Amplifier takes advantage of the best traits technology has to offer. The perfected analog voltage is then converted into the high current output needed to effortlessly drive your loudspeakers.
Application
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.
Technology
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.
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.
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
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 20Hz 20kHz AT RATED POWER
DAMPING FACTOR = 1100
FRONT PANEL STANDBY
VERY LITTLE HEAT PRODUCTION
DUAL, SOLID, COPPER PLATED OUTPUT POSTS
27 LBS
INPUT 12v TRIGGER
WATT RECOMMENDS
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Professional Reviews 94/100
Deliciously Crispy
Sound Quality
94/100
Build Quality
90/100
Value for Money
96/100
PS Audio’s M700 monoblocks marry commanding bass control and explosive dynamics with a rich, liquid midrange that sidesteps sterile Class D stereotypes. Roger Kanno admired their scale, grip and coherent imaging, while Gary L Beard heard natural warmth, crisp treble and exceptional drive. Compact yet formidable, they offer serious high-end authority for demanding loudspeakers.
What Reviewers Are Saying
Pros
Delivers deep, tightly controlled bass, major slam, and effortless high-volume drive with demanding loudspeakers.
Combines near-transparent clarity with a smooth, natural, slightly rich midrange and refined treble.
Creates a spacious, coherent soundstage with precise imaging and convincing vocal presence.
Offers unusually high power and high-end performance for its price, in compact, cool-running monoblock chassis.
&
Cons
One reviewer found the treble slightly smeared when the amplifiers were brand new, improving after break-in.
With an extreme 1-ohm speaker load, output clipped at approximately 98dB, despite otherwise resilient performance.
SOUND QUALITY PERFORMANCE 94/100
Reviewers consistently found the M700 unusually transparent, powerful and musically involving for its price. Its combination of natural warmth, strong low-frequency control and expansive imaging lets it sound both precise and easy to enjoy.
Transparency Resolution
94/100
Gary L. Beard heard terrific clarity and frequency response, saying the amplifiers got out of the way of the music and disappeared within the chain. Roger Kanno likewise found them nearly as transparent as a more expensive reference, while praising their added musical richness.
Tonal Balance Musicality
93/100
The hybrid input stage was repeatedly credited with tube-like natural warmth, smoothness and a liquid midrange without sacrificing accuracy. Reviewers describe realistic tonality, crisp but non-etched treble, and a touch of richness that made the presentation especially engaging.
Dynamics
96/100
Dynamics are a standout: Beard reported quick, decisive crescendos and microdynamic changes emerging from a very quiet background, while Kanno praised epic slam, power and control. The amplifiers drove demanding MartinLogan ESL 9s to desired levels without losing image precision, and another reviewer found substantial performance even into a harsh speaker load.
Soundstage Imaging
93/100
Beard heard a wide, fairly deep stage with excellent imaging and convincingly sized performers. Kanno similarly described spacious, finely crafted stages with good depth, precise vocal placement, and a large coherent presentation at high output.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Quality
90/100
The compact monoblocks use thick, solidly joined steel panels, substantial metal binding posts, and both balanced and unbalanced inputs with trigger integration. Reviewers also found them silent at idle and only slightly warm in operation; their 350W/8-ohm, 700W/4-ohm rating and stable transient behavior into 2 ohms indicate a purposeful high-power implementation.
Value for Money
96/100
At roughly $2,998 per pair, reviewers repeatedly considered the M700 a bargain in high-power amplification. Positive Feedback called it a top choice in its price range, while SoundStage Solo and Audiophilepure described it as among the most powerful amplifiers available for the money and a sensible route to high-end performance.
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Authorized dealers for PS Audio M700 Amplifier
- Advance Audio — in-store — Wichita, Kansas, United States (website)
- Altitudo Audio — online and in-store — Winnipeg, Manitoba, Canada (website)
- Analogue Seduction — online and in-store — Whittlesey, England, United Kingdom (website)
- Audio Affair — online and in-store — Deritend, England, United Kingdom (website)
- Audio Excellence (CA) — online and in-store — Markham, Ontario, Canada (website)
- Audio Solutions - AU — online and in-store — Mascot, New South Wales, Australia (website)
- Audio Venue — online and in-store — London, England, United Kingdom (website)
- AUDIO VIDEO TODAY — in-store — Laguna Hills, California, United States (website)
- Audio Vinyl — online and in-store — Zürich, Zürich, Switzerland (website)
- Audiolife — in-store — Buren, Gelderland, Netherlands (website)
and 53 more verified dealers