The Stellar S300 stereo power amplifier is a dual mono power amplifier capable of effortlessly driving demanding loudspeaker loads to concert levels. The perfect choice for just about any loudspeaker, the S300 slips into any system, surprising and delighting even the most discriminating Audiophile. The S300 opens up your musical library in ways you might not have thought possible, revealing nuance and detail covered up by traditional amplifiers. One listen to the S300 and you’ll know you made the right choice. Effortless, rich, spacious—never a hint of glare or aggression—a joy to hear. An amplifier worthy of the PS Audio name.
Rated at 140 Watts per channel into 8? and 300 Watts per channel into 4?, the S300 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 S300’s rich, warm, and engaging sonic character comes from the Analog Cell. Its powerful, authoritative control over the loudspeaker stems from its high current, ultra-low impedance Class D output stage.
Stellar’s design imperative was to produce a truly musical sounding power amplifier that proudly competed with any amplifier under $5,000. Its designer, PS Audio engineer Darren Myers, took the challenge and set to work on a new concept—a hybrid that would combine the best of today’s technology with time-honored techniques leveraging PS Audio’s forty plus years of experience.
The results are extraordinarily musical. Even from the earliest prototype we knew the Stellar power amplifier series was going to be something special. Stellar amplifiers never draw attention to themselves, a rare quality in amplifiers of any price. After hundreds of hours of tuning, voicing, and perfectionist tweaking, we were confident the ends justified the means.
Audition the Stellar S300 and you’ll appreciate Myer’s dedication to musical truth without compromise.
|Audio Inputs||RCA (Unbalanced)|
|Speaker Outputs S300||Copper base nickel plated binding posts (2 pair per channel)|
|Speaker Outputs M700||Copper base nickel plated binding posts (2 pair)|
|Other||DC Trigger Input|
|Warranty||3 years parts and labor|
|Sensitivity for rated output power||1.01V|
|Noise||1kHz@300 Watts <-100dB|
|Input impedance S300||Unbalanced 50KΩ|
|Input impedance M700||Unbalanced 50KΩ|
|Output Impedance||50Hz, 2.8VRMS <0.007Ω|
|Damping factor||50Hz. 2.8VRMS|
10Hz – 20KHz +/- 0.5dB
10Hz – 50KHz +0.1/-3.0dB
|10-50KHz, 1W/4Ω||< 0.05% (90kHz BW)|
|1KHz, 37.5W/4Ω||< 0.01%|
S300 Stereo Amplifier
|Both channels driven 120vac mains, 1kHz, 1% THD|
|2Ω||Stable for musical transients|