PS Audio Stellar S300 Stereo Amplifier

The Stellar S300 stereo power amplifier is a dual mono power amplifier capable of effortlessly driving demanding loudspeaker loads to concert levels. 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.

The item is used, but like new - meticulously maintained by original owner. Comes complete with all original manuals and accessories and manufacturer’s box. Read my reviews and buy with confidence.

• Dimensions: 17” x 3” x 12”
  
• Weight: 13 lbs.
  
• Color: Black
  
• Voltage: 120V
  
• Mains Power Inputs: IEC C14
  
• Audio Inputs: RCA (Unbalanced), XLR (Balanced)
• Speaker Outputs: Copper base nickel plated binding posts (2
  pair per channel)
  
• 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@300Watts <-100db
  
• Input Impedance: 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%
  

• Output Power: Both channels driven 120vac mains, 1kHz, 1%
  THD
  
• 140 watts per channel 8Ω
  
• 300 watts per channel 4Ω
  
• Stable @ 2Ω