PS Audio Stellar S300 Stereo Amplifier

Description PS Audio Stellar S300 Stereo Amplifier The PS Audio Stellar S300 Stereo Amplifier combines the slam, linearity, and toe-tapping 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 ground breaking. Liberate a wealth of untapped energy trapped in your media library. Plumb music’s subterranean depths and finally hear the bass your speakers were capable of. Revel in rich layers of fine, full detail. Marvel at the deep, extraordinary, wall-to-wall soundstage. Effortless. Lush. Stellar.     View Owners Manual >> View PS AUDIO >>   Features STEREO POWER AMPLIFIER DUAL MONO WITH SEPARATE POWER SUPPLIES POWERFUL MOSFET OUTPUT STAGE RCA SINGLE-ENDED INPUT XLR “TRUE” BALANCED INPUT 140 WATTS PER CHANNEL 8Ω 300 WATTS PER CHANNEL 4Ω 2Ω STABLE VERY LITTLE HEAT PRODUCTION < 0.1% THD 20Hz – 20kHz AT RATED POWER DAMPING FACTOR > 550 FRONT PANEL STANDBY BUTTON ZERO-LOSS INPUT DUAL, COPPER, PLATED, OUTPUT BINDING POSTS 13 LBS. INPUT 12 VOLT TRIGGER   PS Audio Design DESIGN The Stellar S300 stereo power amplifier is a dual mono power amplifier capable of effortlessly driving demanding loudspeaker loads to concert levels. It 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. It’s powerful, authoritative control over the loudspeaker stems from its high current, ultra-low impedance Class D output stage. APPLICATION The perfect choice for just about any loudspeaker, the S300 slips into any system, surprising and delighting even the most discriminating Audiophile. Rated at 140 watts per channel into 8‎Ω and 300 watts per channel into 4‎Ω, the S300 has plenty of horsepower for even the most demanding loudspeakers. Your musical library will open up in ways you might not have thought possible, revealing nuance and detail covered up by traditional amplifiers.   Technology OVERVIEW The S300 is an extraordinarily musical power amplifier rated at 140 Watts per channel into 8Ω and 300 Watts per channel into 4Ω. Power enough for even the most demanding speakers. The S300 design marries the best of two worlds: an ultra linear high-current output power stage with a discrete Class A MOSFET based AnalogCell input stage. Between them, the S300 delivers powerful, authoritative control over the loudspeakers, while maintaining a perfectly layered soundstage under the most complex musical passages. Designed by PS Audio engineer Darren Myers, who invested hundreds of hours of tuning, voicing, and perfectionist tweaking, the results are extraordinarily musical. Stellar amplifiers never draw attention to themselves, and are one of our highest value offerings in amplification, a rare quality in amplifiers of any price. THE ANALOG CELL The connection between preamplifier and power amplifier is critical, for it is at this junction where most essential musical details are easily lost. Nothing in the design of a power amplifier is more important than its input stage when preserving music’s finest nuances. In the S300, a unique topology, called the Analog Cell, has been employed to preserve the rich details found in music. The Analog Cell is the heart of the S300’s musicality, where rich overlaid 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. The Analog Cell makes all the difference. OUTPUT STAGE The Stellar S300 is a dual mono design. This means that each channel has its own, separate power supply. Each of the two channels is a complete and independent power supply and power amplification stage, based on a modern Class D ICE module, designed in Denmark. Class D output stages provide near-perfect linearity, low distortion, and high efficiency. Because Class D amplifiers require an output filter to remove their switching noise, they do not have frequency extremes into the many hundreds of thousands of Hertz. Depending on their design, modern Class D amplifiers, like the type used in Stellar, extend high frequencies to about 50kHz. Human hearing limitations are 20kHz, though most listeners rarely have hearing exceeding half that. The S300 provides excellent frequency extremes, low distortion, high efficiency, high damping factor, and a powerful output of 300 watts per channel into the most common loudspeaker loads of 4Ω.   Specifications Shipping Unit Weight: 13 lbs [5.9 kg] Unit Dimensions: 17”W x 3”H x 12”D (13″D w/connectors) Shipping Weight: 16.5 lbs [7.5 kg] Shipping Dimensions: 22”W x 8”H x 17”D Unit 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 Idle Power Consumption: 13W 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: Copper base nickel plated binding posts (2 pair per channel) DC Trigger Input: 3.5mm 5-15VDC Warranty: 3 years parts and labor Signal Gain: 30.5dB /-0.5dB Sensitivity for rated output power: 1.01V Noise: 1kHz@300 Watts < -100dB Input impedance: Unbalanced 50KΩ / Balanced 100KΩ Output Impedance: 50Hz, 2.8VRMS <0.007Ω Damping factor: 2.8VRMS 8Ω >1100 4Ω >550 Frequency Response: 8VRMS into 4Ω 10Hz – 20KHz /- 0.5dB 10Hz – 50KHz 0.1/-3.0dB THD&IM: 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 8Ω: 140W minimum 4Ω: 300W minimum 2Ω: Stable for musical transients