Rated at 140 Watts per channel into 8Ω and 300 Watts per channel into 4Ω, 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. 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, PS Audio were confident the ends justified the means.
Audition the Stellar S300 and you’ll appreciate Myer’s dedication to musical truth without compromise.
|Unit Weight||13 lbs|
|Unit Dimensions||17” x 3” x 12” Chassis only. 13" deep including connectors.|
|Shipping Weight||16.5 lbs|
|Shipping Dimensions||22”x 8” x 17”|
Factory set only
North America 120V
Europe/Asia/Australia/New Zealand 230V
|Mains Power Inputs||IEC C14|
|Accessories Included||US (NEMA 5-15P) (all versions)
Schuko (CEE7/7) (230V version)
UK (BS 1363) (230V version)
|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|