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Stellar M700 Mono Amplifier

700 watt Analog Cell power amplifier pair

Built in Boulder

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. The M700 combines the slam, linearity, control and pacing of a Class D output stage with the warmth, grace, and rich inner detail of Stellar’s Class A Analog Cell. The results are nothing short of breathtaking. Liberate all the toe-tapping energy trapped in your media library. Plumb music’s subterranean depths as your system gives you more bottom end than you thought possible. Revel in rich layers of fine, full detail. Marvel at the deep, extraordinary, wall-to-wall soundstage. Control your loudspeakers as never before. Effortless. Lush. Stellar.

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Stellar M700 Power Amplifier

Product Description

The problems faced when crafting a new power amplifier are many—delivering sufficient power, control, frequency extension, and dynamics while maintaining a perfectly layered soundstage under the most complex musical passages.

All amplifiers sound different. What determines sound quality are the components and topologies of the amp’s input voltage stage and output current stage. Each section should complement the other. Between them, the amp develops its sound. 

Stellar’s design imperatives—affordable pricing, uncompromised sonics—were major challenges solved by the invention of a unique new circuit christened the Analog Cell.  

Stellar engineer Darren Myers had planned from the outset to take advantage of Class D’s high current, low distortion, ruler flat linearity for the output stage—knowing full well it is the input stage that determines sonic character. This critical interface between preamplifier and power amplifier is where Stellar’s magic would be unveiled; where Myers could lavish upon the music the sweet, tube-like quality of Class A biased MOSFETs. His challenge was to synergistically marry both input and output topologies, for which he invented Stellar’s Analog Cell.

The Analog Cell is the heart of the M700’s musicality, where richly overlayed layers of music’s inner details are preserved even in the most complex orchestral crescendos. The Analog Cell is 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.

  • Mono power amplifier pair
  • Zero-loss Analog Cell input stage
  • Powerful MOSFET balanced output stage
  • RCA Single ended input
  • XLR “true” balanced input
  • 350 watts into 8Ω
  • 700 watts rms into 4Ω
  • 2Ω stable
  • Less than 0.1% thd 20Hz to 20kHz at rated power
  • Damping factor 1100 for excellent loudspeaker control
  • Front panel standby button
  • Effieicient operation with very little heat
  • Dual, solid copper, plated, output binding posts
  • 27 pounds
  • Input 12 volt trigger

C/NET

Steve Guttenberg

They sounded so good together I couldn't bring myself to try too many other speakers. The sound was rich with resolution to die for.
Magnepan speakers aren't known for their deep bass punch, but here with the two Stellars the .7 speakers' low bass was kicking with "The Legendary Skatalites in Dub" reggae album with really low, feel-it-through-your-toes bass. Austin Wintory's orchestral score for "The Banner Saga" sounded downright huge, and the low bass drums definition was truly stellar!

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10 Audio

Jerry Siegel

Folks, this is the future. We have heard vast improvements of Class D amplifiers during the last 10 years, and we are at or near the point where the technology is largely irrelevant to the final sound. The sound of audio components is more dependent on the implementation than on the underlying technology. The PS Audio Stellar S300 gets so close to perfection that the low purchase price is an out-of-this-world value. The PS Audio Stellar S300 adds nothing objectionable while delivering wonderful musical performances.

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PS Forums

Edward Weinman

I have had the 700's for several months now and all I can say is..."WOW!" Even after the burn in period at PS Audio, that was not the end of the burn in process. It's taken a few more months and I don't even know now if they will continue to do this. However, I can't tell you enough of what these amps have done for me in terms of detail and no compression of sound in loud passages of music/film. For me, they are a revelation! It's only been in the last month or so that actors, orchestras, soloists have exited the speakers and are in my home theater room! The Maggies are so much more in richness and dynamics that I really can't believe it! I had a gut feeling prior to purchasing them that I was in for something very special and that's putting it mildly! I've received Paul's emails over the years and actually this was a blind purchase but the price was certainly right for each of the six amps and the trade in of my Carver 7 channel amp was financially sufficient enough that the value given me would cover one and a half of the 700's!

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