PS Audio

PS Audio Stellar S300 Stereo Amplifier

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  • Regular price $2,295.00


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 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.

Specifications

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”
Color Options Black
Silver
Voltage Options
Factory set only
Japan 100V
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)
XLR (Balanced)
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 
3.5mm 5-15VDC
Warranty 3 years parts and labor
Gain 30.5dB +/-0.5dB
Sensitivity for rated output power 1.01V
Noise 1kHz@300 Watts <-100dB
Input impedance S300 Unbalanced 50KΩ
Balanced 100KΩ
Input impedance M700 Unbalanced 50KΩ
Balanced 100KΩ
Output Impedance 50Hz, 2.8VRMS <0.007Ω
Damping factor 50Hz. 2.8VRMS
8Ω >1100
4Ω >550
Frequency Response @2.8VRMS 
10Hz – 20KHz +/- 0.5dB 
10Hz – 50KHz +0.1/-3.0dB
1KHz, 1W/4Ω <0.02%
10-20KHz, 1W/4Ω <0.02%
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
8Ω 140W minimum
4Ω 300W minimum
2Ω Stable for musical transients