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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
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PS Audio M700 Amplifier
The PS Audio M700 monoblocks pair prodigious output with a refined, musical presentation. The hybrid topology—a class-A MOSFET input + class-D output—delivers authoritative slam, tight low-end control and a natural, slightly warm midrange that preserves vocal presence and instrument texture. Reviewers such as Roger Kanno and Gary L Beard noted expansive, immersive soundstages and stable imaging even at high levels. Compact steel chassis, balanced XLR/RCA inputs, bi-amping posts and thorough protection circuitry make the M700s easy to integrate. Ideal for demanding speakers and listeners who want high headroom without a heavy-handed tonal signature, the M700s are widely cited as an exceptional value for serious power and musical engagement in a small footprint.
Pros
- Massive, reliable power and headroom (350W/8Ω, 700W/4Ω) that drives demanding speakers without clipping.
- Natural, musical midrange with a touch of tube-like warmth that keeps voices and acoustic instruments expressive.
- Very tight, controlled bass and high damping factor that maintain authority and precision under load.
- Compact, solidly built monoblock form with balanced inputs, bi-amping terminals and robust protection for easy integration.
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Cons
- Plain, utilitarian styling that may disappoint buyers seeking high-end cosmetics.
- Treble can sound slightly relaxed out of the box and may require break-in to reach full extension for some listeners.
Sound Quality
93/100
Dynamics
94/100
Monoblock hybrid design (Class-A MOSFET input + Class-D output) yielding 350W/8Ω and 700W/4Ω provides exceptional headroom and slam. Reviewers repeatedly praised its authority and control — "drive the paint off the walls," "never shutting down," and ability to reach ~98dB before clipping — and the very high measured damping factor (>1100 at 8Ω) underpins the amps' firm speaker control. Monoblock architecture and stability into low impedances (stable for musical transients into 2Ω) justify the top-tier dynamics rating.
Soundstage Imaging
90/100
Multiple reviewers reported wide, deep, and finely crafted soundstages with excellent imaging and stable, believable placement of instruments and voices. Reviewers also noted that imaging remained precise even at high levels and when driving revealing speakers, indicating strong spatial performance under load.
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Build Quality
89/100
Each monoblock is compact but solidly built with thick steel panels and quality connectors; operation is quiet and units run only slightly warm. The monoblock form factor contributes to superior channel separation and power-supply implementation, though relatively light 13 lb weight reflects the efficient Class-D output modules rather than a massive transformer-based design.
Value for Money
90/100
Reviewers explicitly call the M700s a 'relative bargain' at retail $2998/pair ($1499 each) given 350W/8Ω (700W/4Ω) performance, praising the combination of power, sound quality, and build for the price. Multiple reviews state it outperforms competitors in its price band, justifying a strong value score relative to peers.
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