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PS Audio Stellar S300 stereo power amplifier

285,000.00

The S300 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.

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PS Audio Stellar S300 stereo power amplifier

The PS Audio 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.

From the deepest bass to the warmest, sweetest highs, the Stellar S300 makes any loudspeaker sing and is our most affordable stereo power amplifier ever.

Breathe new life into your loudspeakers with the Stellar S300, a full-sized, affordable stereo power amplifier that honors the music and controls your loudspeakers better than you ever imagined possible. The S300 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.

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.

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.

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.

  • 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

Specifications – S300 Amplifier

Stellar S300 Stereo Amplifier

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
Color Options Black
Silver
Mains Power Inputs IEC C14
Idle Power Consumption 13W
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 50Hz. 2.8VRMS
8Ω >1100
4Ω >550
Frequency Response 2.8VRMS 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

Re

Brand

PS Audio

PS Audio is a well-established and prestigious American company that has been at the forefront of the high-end audio industry since its inception in 1973. Founded by Paul McGowan, the company's primary focus is on designing and manufacturing top-tier audio equipment and components for audiophiles and music enthusiasts seeking uncompromising sound quality. At the heart of PS Audio's philosophy lies a profound passion for music and an unwavering commitment to delivering the ultimate listening experience. The company offers an extensive range of products, including power amplifiers, preamplifiers, DACs (Digital-to-Analog Converters), phono stages, streamers, and power conditioners. Each product is meticulously engineered with cutting-edge technology and precision craftsmanship, reflecting the company's dedication to excellence. One of PS Audio's standout achievements is its Power Plant series, which features regenerators that offer a unique approach to dealing with power-related issues. These devices work by regenerating the incoming AC power, providing a clean and stable electrical supply to audio systems, resulting in improved sound quality and enhanced performance. The Power Plant series has earned widespread acclaim from audio enthusiasts for its ability to unveil previously unnoticed nuances in music recordings. Beyond its product lineup, PS Audio is known for fostering a strong sense of community among audiophiles. The company regularly engages with its customers through forums, educational content, and events, creating a collaborative environment for discussions and learning. Innovation is central to PS Audio's identity, and the company has earned numerous accolades for its groundbreaking technologies and proprietary solutions. By staying ahead of industry trends and continually pushing the boundaries of audio engineering, PS Audio maintains its position as a respected and influential player in the high-end audio market. In conclusion, PS Audio's journey over the decades reflects a profound dedication to audio perfection. With an unwavering commitment to delivering superior sound quality, innovative products, and a supportive community, PS Audio continues to shape the world of high-end audio for discerning listeners and music enthusiasts alike.

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